tag:blogger.com,1999:blog-50363419249677040622024-03-05T06:23:29.590-08:00SundialSazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.comBlogger26125tag:blogger.com,1999:blog-5036341924967704062.post-39637208481672797162011-01-01T09:02:00.000-08:002015-12-29T21:13:02.194-08:00Equatorial or Universal SundialAs the name suggests equatorial or universal dials is flexible to use any place in the world. It is built such a way that you can adjust the dial according to the latitude reading of your place of living. This kind of dial is also adjustable in southern hemisphere of the world.<br />
<br />
<div style="background: none repeat scroll 0 0 #ff9; border: 1px solid #e5e597; clear: both; margin-bottom: 18px; overflow: hidden; padding: 13px;">
<strong><span style="color: #00a9e0;">ALERT:</span>
<a class="manual-optin-trigger" data-optin-slug="dpndz5b3wuirmt98" href="https://www.blogger.com/blogger.g?blogID=5036341924967704062#">Get Instant Access To My Extra Tips to Get Most Out of Your Sundial!</a>
</strong></div>
Almost all the sundials are made to use for northern hemisphere. But, if you are living in Brazil, Australia or New Zealand than you are living in southern part of the world. In that, case using a equatorial sundial would not be problem at all.<br />
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOYLruAob1yUmZEiNxw1_Trae05nWWMbXZEJbk47xa8US7QdSoPTw94_Cbnhwxy1YS4qMUOgR-kQNWudfXaBYcwZyXZQzEo52UhtFeoBziGMvC4dvATcI3mizIsHPYbM46LX2d4JLvTAA/s1600/equitorial.jpg" imageanchor="1"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOYLruAob1yUmZEiNxw1_Trae05nWWMbXZEJbk47xa8US7QdSoPTw94_Cbnhwxy1YS4qMUOgR-kQNWudfXaBYcwZyXZQzEo52UhtFeoBziGMvC4dvATcI3mizIsHPYbM46LX2d4JLvTAA/s320/equitorial.jpg" width="240" /></a></div>
<br />
You may probably heard about equator which is a imaginary line extend from east to west and splitting the world apart in two parts, namely northern and southern hemisphere. This equator line was drawn by imagining that the whole world is plane surface, just like the computer screen you are sitting in front now.<br />
<br />
But,the world is not a plane surface, it is like a big ball. And if you draw a line from a center of the north pole to the centre of the south pole, it become the axis of the earth on which it spins every day. The earth slightly tilted on its axis. Celestial equator is the same imaginary line like equator but as it is drawn on the spherical original tilted world, so it get inclined by 23.4 degree with the equator.<br />
<br />
When using a equatorial sundial, the one problem an user can face is that it will not world when the sun is on that celestial equator. Because at that time the sunlight falls on the edge of dial and the gnomon cannot cast any shadow to measure time on the dial.Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-8262130158032605642010-12-28T00:46:00.000-08:002010-12-28T11:31:48.316-08:00Analemmatic Sundial<span id="internal-source-marker_0.35179789522606975" style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Analemmatic sundial is a type of sundial based on movable gnomon where other sundial use a fixed gnomon.They are not suitable to built in a small place; rather it require a large lawn. That's why this type of sundial are not very common through the world.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">The name Analemmatic sundial came from the word called <a href="http://www.knowledgerush.com/kr/encyclopedia/Analemma/"target="_blank">Analemma</a>. The dial is elliptical and gernerally six meters wide in the middle; the short axis of the ellipse is alighed North-south and the long axis is aligned East-West. THe hours indicators are pointed from 6am to 6pm and the 12 hrs point directed towards true North.</span><br />
<br />
<br />
<br />
<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiGE33lTOloX7tD_083gAscJaOb1gEjkKz-Lp50ibXWhy3l1ihgBYolSia578dQIiI22WcS3KwkH3OhBhMqjLAIotIqR_rIuaUX7pmw8xbQMqsYM-WFnVYsl7lu6_2Q_47eA0VAAZDXWB0/s1600/Analemmatic+sundial.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiGE33lTOloX7tD_083gAscJaOb1gEjkKz-Lp50ibXWhy3l1ihgBYolSia578dQIiI22WcS3KwkH3OhBhMqjLAIotIqR_rIuaUX7pmw8xbQMqsYM-WFnVYsl7lu6_2Q_47eA0VAAZDXWB0/s320/Analemmatic+sundial.jpg" width="320" /></a></div><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">On these sundials, hours marked by points at the edge of circumference of a elliptical dial. This is also very uncommon because, other types of sundials uses marked lines to indicate hours. The gnomon is vertical and should be moved according to the indicated place inside the elliptical dial on different seasons of a year.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Here is a fun that a person can stand on those marked point inside the dial at any given month of the year and act like a gnomon. So, these dials are very entertaining for people when they are placed inside any public amusement facilities as the visitor can interact with the dial by acting like a gnomon.</span>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-13277716597700906372010-12-27T10:07:00.000-08:002010-12-27T10:07:24.921-08:00Why Sundial Time is Slightly Different than Normal Cock<div style="font-family: Verdana,sans-serif;"><span style="font-size: small;"><span id="internal-source-marker_0.3507181077072562" style="background-color: transparent; color: black; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">The solar time was well defined in the equation of time presented by <a href="http://en.wikipedia.org/wiki/Ptolemy">Ptolemy</a> about two thousands year ago. The equation analyze the earths motion on its axis and around the sun in different period of a year to measure time. The equation was a subject matter of Astronomers until recently.</span><br />
<span style="background-color: transparent; color: black; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Ancient people used sundial to measure time until the last centuries invention of mechanical clock take over timekeeping from sundial. Although modern people do not use sundial to keep time but they use to buy or collect sundials as a matter of curiosity and antiquity. They observe the difference between the sundial time and their clock time and the issue of the Ptolemy's`s equation of time came in light again. </span><br />
<span style="background-color: transparent; color: black; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">The earth is rotating on its own axis and it is spinning around the sun as well. It takes approximately 365 days or a year for the earth to finish it`s full orbit around the sun , and this path is not circular it is elliptical. So, the earth come close to the sun for several months in a year and according to <a href="http://en.wikipedia.org/wiki/Johannes_Kepler">Kepler</a>'s law the spinning motion of earth on it`s axis become faster during this time. This phenomenon influence on a major measurement our clocks are based on, that is it counts the day with 24 hours. But, when each spins very fast at that closer time to the sun, it actually spins around its axis less than 24 hours.</span><br />
<span style="background-color: transparent; color: black; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">That make a lot of difference between time when we measure it upon solar basis and and measure it upon a regular clock basis. Scientists estimated that the difference become 14 minutes in Mid-February and just over 16 minutes in mid November. On the other hand, when earth gets further than the sun , it takes a bit more than 24 hours to finish a spin on axis or meridian. So, the clock gives us a average time all over year which is roughly 24 hours; but it is not totally accurate. But, it works as the minor change does not give any significant effect on our daily life.</span></span></div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-38444105827613200782010-12-27T00:43:00.000-08:002010-12-27T10:09:12.364-08:00What is Sundial?A sundial is the ancient form of a clock used by humankind. The simplest sundial is a stick stuck in the ground, casts a shadow indicating the time.<br />
<br />
If you asked time to a <a href="http://en.wikipedia.org/wiki/Stone_Age">stone age</a> human, they can differentiate time in two entities: Day and Night. Obviously they cant tell you what`s the exact digit of time because they don't have numeric sense or perhaps clock was not invented. However, it is clear that the sun rose and sets over the horizon. It's a fact that the shadow, the sun made its way across the sky has not escaped the attention of primitive man. The morning shadows were long, gradually decreased to disappear at lunchtime, then spread again in the opposite direction, behind the sun.Thus,shadow is a natural instrument for measuring time.<br />
<br />
Using the shadow sun cast on the objects of earth, first clock was made in human history. No one can be sure that when the sundial was found, but we know that already in 3500 BC; The Egyptians built sundials not only maintained telling time, but it pointed time during the longest and shortest day of the year.<br />
<br />
Sundials are usually with a circular disk used as face of a clock, On this disk, the lines use to curve down to represent the hours. There are also special sundial that can track the tides, the seasons and earthquake. In a sundial, obelisk is a gnome stands in the middle of clock disk that acts by casting shadow to mark time. In the northern hemisphere as the sun moves across the sky, this shadow moves clockwise. At lunch time, the shadow disappears which indicated noon or 12 hrs in our normal clock.<br />
<br />
To compensate for the tilt of the earth on its axis,sundials are tilted to the north. Otherwise, the sundial will not compensate for slightly different way from the sun in the sky takes each day as the Earth moves through the seasons. Sundials are inclined to the north,called styles. These sundials are more acquarate because of its orientation is similar to the tilt of the earth, the hours remain the same all year round.<br />
<br />
In English we use the word "hour" to tell time. This word can trace back its origin with the invention of sundial in Egyptian and Greek history. The word Hour comes from Greek or latin word Hor. The word Hor comes from Egyptian God <a href="http://en.wikipedia.org/wiki/Horus">Horus</a> who was the God of Dawn.<br />
<br />
In modern world, technology have gone so far to measure the time: mechanical clock, digital clock, atomic cock etc. But sundials still remains the most accurate time measurement, even after the invention of those clocks. People still use sundials to reset the times of clock invented by modern technology. However, with the invention of <a href="http://www.rolex.com/"> Rolex</a>!!!, sundial finds its place in gardens of modern society.Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-17941777550162445632010-12-26T00:03:00.000-08:002010-12-26T00:03:34.714-08:00Pocket Sundial<div style="font-family: Arial,Helvetica,sans-serif;"><span id="internal-source-marker_0.7201041058376082" style="background-color: transparent; color: black; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">We are using wristwatch now a day to keep a look at time in every day life. But, the history of innovation of this miniature clock was not so smooth. During the time of it`s first development, wristwatch was facing lots of difficulty in accuracy for mechanical backlogging. It takes time to make a wristwatch with supreme perfection and became what it is now today.</span><br />
<span style="background-color: transparent; color: black; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">The development of mechanical wristwatch began at Renaissance periods while Europe became increasingly trade oriented and business booms demands a accurate time time keeping device. Businessman and and traders movement becomes intense and they require a potable watch; but the armature mechanical watch cant satisfy their need. This continual pressure pressed the watchmaker to think of a different technology rather than blindly rely upon mechanincal technology to invent a potable clock.</span><br />
<span style="background-color: transparent; color: black; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">What they came with is a millennium old technology of time-keeping: sundial and they perfected it to a pocket sundial. Since, the innovation, pocket sundial become a very popular instrument collected by trader, craftsman and elites of European society. During earlier stage, those pocket sundials could be used only during day because sundial depends upon sunlight to measure time from shadow casted by it`s gnomon.</span><br />
<span style="background-color: transparent; color: black; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">The Swiss watchmakers later perfected this pocket sundial usable during night as well in </span><span style="background-color: transparent; color: black; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">streetlights, gas lamp and even with a cigarette lighter. As it become more and more popular in Renaissance Europe, Pocket sundial become available for ladies and it became more as jewellery item than timepieces.The mechanical wristwatch also perfected after few decades and market domination of pocket sundial got gloomy.</span><br />
<span style="background-color: transparent; color: black; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Now a day, people uses pocket sundial as a instrument of antique and curiosity.</span><span style="background-color: transparent; color: black; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"> These sundials are generally made of copper and brass and come up with built-in magnetic compass to be oriented north. The gnomon of this dial cast a shadow in sunlight and marks the local time by in the dial marked with 1 to 12 hrs. Some are ornamented with different</span><span style="background-color: transparent; color: black; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"> designs and very handy with average weigh of 85 grams.</span></div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-46338921656921341312010-12-22T00:25:00.000-08:002010-12-22T00:25:47.885-08:00Think of a New Ornamental Meterial for Your GardenYou may have watched movies showing ancient greek and roman civilization. Then, you may notices the elegence home gardens maintrined by those two great civilization. They were sofisticated enough to decorate gardens with stone sculptures, water fountain and one item your eyes may negelect to notice; it is sundial.<br />
<br />
Sundial is the oldest time showing device used by human civilization. Historians noticed that there were aroud 13 different types of sundial used by the Greeks and Romans untill 30 BC. Although sundial was rarely used by the Greeks around 1500 BC; the Romans practices it use for a mass population in the areas they ruled. Roman Emperors emphesised the use of sundial in various public places and events.<br />
<br />
You may have heard the term "English Garden" if you travel in Europe. English Garden is the concept of grdening around Europe in 18th century inspired by lanscape painting of Nicolas Poussin and Claude Lorraine. The concept of English Garen was a standadized practice of public parks and estate home garden all over europe in the 19th century. Sundial was an imprtant antique as grden furniture in the concept of English Garden. Nevertheless to mention the 19th century ornate carved stone <a href="http://www.english-garden-antiques.co.uk/sundial/carved-stone-sundial.html">sundial</a> .<br />
<br />
There are different types of sundials available today; to ornement home garden. Among these, most polpular ones are horizontal sundial, brass armillary, ornate curved stone, ornamental astrolabe etc. It is important to notice that sundials can be percieved as balacnces and beautiful addition for a fairy garden rathen than a official time keeping device. As, it is based on solar time and need to be adjausted thoughout diffrent seasons in a year.Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-88601157461643280552010-12-21T23:45:00.000-08:002010-12-21T23:47:49.723-08:00Make a Sundial from a Flower Pot<span id="internal-source-marker_0.3928279364053544" style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">There could be hundreds of way to make a sundial from the scrap. All those methods may require some tools or materials to collect which could not be handy for everyone. What about making a sundial form a object that is available in most of houses.Lets make thing simplified, making a sundial just form a flower pot.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Making a sundial from a flower tub is a fun for the kids and educational in a way top learn the earth circular rotation around the sun. They could easily made this sundial from simple astrological experiment in the meanwhile inventing most ancient piece of time telling device.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Things to do before you start</span><span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Find out a flower pot in your home garden. Wash this by taking away any plant or soil inside it. If it is a hassle for you, buy a new one from the market. Manage a straight long dowel or pen that will work like a gnomon up above the pot. You also need a marker pen, white paper and tap.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span id="internal-source-marker_0.3928279364053544" style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Steps</span><br />
<br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">1.</span><span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"> Go out side ; find a sunny spot in your garden or yard. Place the white paper on the ground and put the pot on the paper upside down.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">2</span><span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">. Make a hole at the center bottom of flower pot and stick the dowel or straight pen inside it. Make the dowel permanent by gluing it though the hole. This will make the dowel permanent on the tub and remember it need to stand as straight as possible.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">3.</span><span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"> Now check you wrist watch and exactly each hour notice the shadow of dowel casted on white paper. Use a marker pen to draw a line corresponding to each shadow in every hours of a day.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 14pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">4.</span><span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"> If you start this process in the morning near the evening you will end up with around 8 to 10 line drawn on the paper indicating hours of the day; e.g. 9 hrs, 10 hrs, 11 hrs etc.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">When you finish it, you will see the lines you draw on the paper follows a clockwise direction. This is because if you live in the northern hemisphere, any shadow casted by sun will move clockwise. Shadow will also change it places as the earth is not stable relative to sun; it is spinning on its axis continually.</span>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-66387354469255331722010-12-21T11:02:00.000-08:002010-12-28T11:34:16.143-08:005 Easy Steps to Make A Sundial<span id="internal-source-marker_0.8111727016682976" style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Think for a minute</span><span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Have you ever asked yourself how people measure time when there was no clock or wrist watch. There was no mechanical or digital technology advancement thousands of years ago but people use their imagination to measure time. They invented a time telling device that counts the hours and minutes of a day by using the shadow of the sun. As Albert Einstein said once, "imagination is powerful than knowledge”.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">If you stand beside a sundial, you will feel like standing thousands of years back in history.It is spectacular to watch on a sundial and investigate it`s power of measuring hours and minutes of a day. But,the problem is where you will find a sundial. May be you can make one of your own. Sounds difficult! Absolutely not. If you follow the instruction given below, it will not take more time for you to make a sundial yourself.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Making a sundial could be a great fun as it does not require any technical knowledge at all.All you need to do is manage some materials and follow the steps describes here. You can do it yourself or with your children or with the kids if you are a school teacher in profession.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Before you begin</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">You need to accumulate some materials before start doing what I am suggesting here to do. Don`t worry, all these materials does not cost you much money or if you are lucky; you may already posses these materials right in your home.First of all, you need to manage a cardboard to make the dial where you will curve or draw the hour lines. A sharpe anti-cutter and a marker pen is needed. You also need glue,scissors and a computer with printer to begin the process.</span><br />
<br />
<br />
<span id="internal-source-marker_0.8111727016682976" style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><b>I</b><b>nstructions</b></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Step 1</span><span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">: Find out the latitude of your location on earth. Sounds difficult? Just go to this <a href="http://www.satsig.net/maps/lat-long-finder.htm"target="_blank">website</a> and zoom the google map until you find your location and get the latitude reading. You need this information to calibrate your sundial to the <a href="http://solar.physics.montana.edu/ypop/Classroom/Lessons/Sundials/skydome.html"target="_blank">due north</a>.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Step 2</span><span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">: Cut the card-board in more or like rectangular shape. You can cut big rectangle but remember not to make it too big or small. Because you are going to draw the hour lines on it.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Step 3</span><span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">: Brows the <a href="http://www.bbc.co.uk/norfolk/kids/sundial_base.pdf"target="_blank">BBC Norfolk Kids</a> website to ge the illustration of the sundial base. Just print the drawing for further use. Also, print the <a href="http://www.bbc.co.uk/norfolk/kids/sundial_gnomon.pdf"target="_blank">gnomon illustration</a> from that website.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Step 4</span><span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">: Put the printed paper on the cardboard you have just shaped by cutting. Draw the hour marks on the rectangular cardboard with your marker pen. Cut the gnomon by putting the printed illustration on a hard drawing paper.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Step 5</span><span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">. Cut the card-board on the specific space as stated on the printed illustration. Put the gnomon through the hole and for firmness you can use glue. You can just paste the paper you have just printed on the cardboard and skip the step 4.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Now you are ready to go outside to place the sundial towards <a href="http://en.wikipedia.org/wiki/True_north"target="_blank">true north</a>. Enjoy the sundial that you make your own.</span>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-83790866618068143052010-12-21T08:21:00.000-08:002010-12-26T00:00:06.955-08:00Brass Armillary Sundial<span id="internal-source-marker_0.17900116450826764" style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">If you can look at a unique work of art features for your yard or garden to be armillary what you're looking for. Brass Armillary spheres were used for centuries as globes corresponding to the meridians of the world.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">You probably heard about brass which is a alloy of copper and zinc. So, you might be thinking brass armillary sundials are made of only brass. Practically it is not true; it can be made of any durable metals such as brass, steel and aluminum.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">You might also wonder that there is hard to find the use of English word “<a href="http://en.wikipedia.org/wiki/Armillary_sphere">Armillary</a>”. The word comes from latin word “Armilla” which means bracelet. A digital watch can be looks like a bracelet that we can wear on wrist. But, how come a sundial can looks like a bracelet. Actually, a brass armillary sundial looks like a big bracelet.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This type of sundials are constructed in way to represent the earth`s equator, prime meridian and other celestial circles. Rings or bands of metal are positioned such a way to represent those things which are perfect for adding charm and personality in your garden and sometimes a breathtaking ornament for your garden visitors.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This device has a large arrow that passed through the main ring. Two hand straps keep the arrow in place, with deep, with roman numerals on the inside. In the sunny sky; North directed arrows works like a genomon and casts a shadow on the numbers and indicates the time. The construction is solid polished brass and can be maintained with regular beauty care.</span><br />
<br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Elegant arcs and rings of the armillary sundial is unique and their relative placement with the arrow gnomon accurately tells the time. It also comes with sophisticated decorations like stars, or roman numerals to display hours and minutes .</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Frequent durable metals used in brass armillary such as brass, steel and aluminum, which makes it ideal for outdoor use. As the sundial gets old, there is a layer of debris called cerdigris patina deposited on the brass, which makes it more eye-catching with age. Armillary can be made with steel. In that case, it can be black powder painted to preserve the color of strong weather and prevent form getting rust and corrosion for many years.</span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"></span><br />
<span style="background-color: transparent; color: black; font-family: Arial; font-size: 11pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">When these types of sundial made or aluminum, it comes with more permanent base fixture. If this pedestal does not come with the package, additional bases need to be purchased separately. Armillary bases may consist of a base of cast iron, aluminum base, wrought iron stand or granite base which makes the sundial more challenging and exciting.</span>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-285183974348940352010-12-12T05:14:00.000-08:002010-12-12T05:16:10.727-08:00How to Install an Armillary Sundial in Your GardenArmillary sundial are the best looking sundial you can get in market. It gives you the most accurate time which is more precise than any other mechanical or digital clock available in the market. But, you need to properly sites and positioned it for that perfection.<br />
<br />
Armillaries comes with interlocking spheres and spear like stick or gnomon. As the sun moves across the sky, the gnomon casts a shadow on the surface, which displays the time. They are usually made of brass, bronze or aluminum. Dimensions, materials and designs vary, but the installation instructions is same for all styles.<br />
<br />
To set up this, first choose your location. Place it higher your sunny areas in your yard or garden to get direct sunlight and to give more accurate reading of the time.<br />
<br />
The next thing you need to do is adjusting the base. You need to do two adjustment: horizontal and vertical. Horizontal means the sundial need to be paralleled with the ground. A screw attached with it will help you adjust this leveling. If you do not do this and the base is inclined, it will make the sundial reads incorrectly. Regularly check that the baseline, especially after frost and cold.<br />
<br />
The next thing you need to do is position the gnomon or arrow like stick towards right direction. Configure the north from a copass and point the gnomon in this direction. For greater clarity, the gnomon need to pointed towards the geographic north not the magnetic north. But, as it is slightly difficult to calibrate true north,directing genomon towards magnetic north would be fine.<br />
<br />
Guess you are still enthusiastic about pointing the genomon to actual north. Then, you must know that our north pole is not where a compass shows us; it is some degree of distance away from the magnetic north. For example, from Washington DC, this angle of declination is 21 degree east;the original north is 21 degree away to the east from the direction a compass is showing. If you want to know this inclination figure for your location, you need to find out your latitude and longitude from <a href="http://www.google.com/earth/index.html">Google Earth</a> and then find the reading from this <a href="http://www.ngdc.noaa.gov/geomagmodels/Declination.jsp">website</a>.<br />
<br />
There is another way to do this, but not so mathematically precise way.Set the genomon by slightly moving its direction at exactly 12 AM, so that it cast no shadow. Because, at midday, a well installed solar clock will not cast any shadow. The sun will be directly overhead at midday it naturally will not cast any shadow directly beneath it.Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-45763919445085892362010-12-11T13:17:00.000-08:002010-12-11T13:17:56.639-08:00Sundial Images<embed type="application/x-shockwave-flash" src="http://picasaweb.google.com/s/c/bin/slideshow.swf" width="500" height="500" flashvars="host=picasaweb.google.com&hl=en_US&feat=flashalbum&RGB=0x000000&feed=http%3A%2F%2Fpicasaweb.google.com%2Fdata%2Ffeed%2Fapi%2Fuser%2Ffurelice%2Falbumid%2F5549532413420979601%3Fkind%3Dphoto%26alt%3Drss" pluginspage="http://www.macromedia.com/go/getflashplayer"></embed>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-4093632567810533062010-12-11T02:34:00.000-08:002010-12-11T13:23:30.690-08:00Factors that Influence accuracy of a Sundial<div class="MsoNormal">Think you are flying from USA to Europe. Do you need to change the time of your clock? Yes you do. Because, time is different in various location of the world. So, like normal clock, does the time of a sundial depends upon the city where you living? Quick answer, yes. More specifically, it is important that on your location in the planet earth. Therefore, if you need tools to guide you when you deal with sundials.</div><div class="MsoNormal"><br />
</div><div class="MsoNormal">First you must understand that magnetic north is not the same as True North, pointing to the globe at the North Pole. Sundials use true north as a reference point not the magnetic north. So, if the sundial is calibrated to align with magnetic North, it will not give the correct time display.</div><div class="MsoNormal"><br />
</div><div class="MsoNormal">The difference between magnetic North and True North is that magnetic inclination is different in different places. Therefore, while you buy one, you need to position it with actual geographic north by compensating with the magnetic north of your location.</div><div class="MsoNormal"><br />
</div><div class="MsoNormal">Also note that the position and length of the shadow cast by sundial gnomon depends not only on time of day, but also the time of the year. Different seasons mean that the position of the sun at a certain time of day is different in the sky and has significant impact on the shadow cast by gnomon. </div><div class="MsoNormal"><br />
</div><div class="MsoNormal">The shadows cast by the gnomon tell the time of a day, because the shadows change direction corresponding to the times of the day. A sundial uses the position of a shadow to tell time. This is not exactly what you want on your clock that shows the standard time, compared with the solar time that is the time from the sun itself. The two measures are not exactly the same time, of course, if the trend of telling time is in the same direction: with the direction of sun.</div><div class="MsoNormal"><br />
</div><div class="MsoNormal">Before the invention of the mechanical clock, for example, before 1883, people used primarily sundial. Each neighborhood has maintained their own time that they followed, depending on the sundial, which of course is based on the position of the sun in the sky of that particular neighborhood. Of course, the time may significantly vary in closer neighborhoods; say between two cities located 25 miles to the east or west from each other. But it works for that time until the arrival of the mechanical clock, which is not really important that the time was wiped out in minutes.</div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-12415516394133653702010-12-11T01:47:00.000-08:002010-12-11T01:47:12.982-08:00Armillary Sundial<!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--><!--[if !mso]><img src="http://img2.blogblog.com/img/video_object.png" style="background-color: #b2b2b2; " class="BLOGGER-object-element tr_noresize tr_placeholder" id="ieooui" data-original-id="ieooui" /> <style>
st1\:*{behavior:url(#ieooui) }
</style> <![endif]--><!--[if gte mso 10]> <style>
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-parent:"";
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-para-margin:0in;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:"Times New Roman";}
</style> <![endif]--> <div class="MsoNormal">Armillary sundials sometimes referred as Armillary Spheres although they are slightly different. Armillary spheres generally made of with a series of rings, with a model of the earth at the center. Circular bands around the globe usually curved with stars that represent<span> </span>Celestial bodies of the sky.</div><div class="MsoNormal"><br />
</div><div class="MsoNormal">On the other hand, Armillary sundials are different from the outlook of the armillary sphere with a curved arrow through the center of the sphere. This arrow helps the armillary sundial to tell time in the sun when it casts a shadow over the equatorial belt.</div><div class="MsoNormal"><br />
</div><div class="MsoNormal">The armillary sundial is both sophisticated and simply the best looking among all kinds of sundial. The bold looking metal made body of the dial and the sharp projected arrow gnome to the sky make it look stubborn. They are constructed in many public place of the world to draw attention of passer-by. They beautify many great places that people visited often, while at the same time offers a new way to track the passage of time with nothing but the shadow cast by the sun. In New York, you can see one of this spheres at <a href="http://en.wikipedia.org/wiki/Rockefeller_Center">Rockefeller Center</a>.</div><div class="MsoNormal"><br />
</div><div class="MsoNormal">You may also have seen these objects in an elegant garden. Most are pretty decent size and draw the attention of everyone in the neighborhood.<span> </span>This art object give the beautiful garden a more traditional and classical view. This does not exclude when these dials are presented with the variation of colors or eclectic decorated to give the garden a stunning view.</div><div class="MsoNormal"><br />
</div><div class="MsoNormal">Include an armillary sphere or sundial in your garden with flower surrounding will make it a major focal point of the garden. With both approaches, simply place it or<span> </span>with decoration, all the time it is a unique work of art, decoration of the garden, if you want to include in your garden.</div><div class="MsoNormal"><br />
</div><div class="MsoNormal">These pieces look mystical, long valued its aesthetic and practical instantly give your garden sophisticated look. They are durable and practical, the ultimate form and function. Plus, you never have to buy batteries for this old clock! So the next time you though an outdoor home party, you will be charmed by friends who cherish this beautiful add-on in your garden, majestically high in his garden.</div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-50180844955614527672010-12-07T10:34:00.000-08:002010-12-07T10:34:13.956-08:00Make your own armillary sundialMost of the armillary sundial available in the market are made of metal like copper and brass. Metal circles aorund the genom represents most important areas of the sky. Greek philosopher Anaximander of Miletus (611-547 BC) or astronomer Hipparchus or (190-120 BC)invented this armillary sundial. <br />
<br />
However, they are beautiful and complex. If you can not find in your area or are too expensive to buy, you can always create your own. It is difficult, but the tools and techniques that you may be able to pull it off easily.<br />
<br />
You need cardboard, scissors, painter, long toothpick, disk cd with case and a tape that is wider than 25 mm.<br />
<br />
Make hour circles on paper or print it from a cloack image.Make black lines by cut with scissors, and place it on your head and keep the tape on them. Use a long strip of tape and let it hang from the bottom. Roman numerals in the center to an hour a circle along the edge CD insert.<br />
<br />
Using colored paper, cut two circles, each 3 cm.Tape on both sides clearly and insert the toothpick right through the middle of CD case.<br />
<br />
Take the case of gem and hinged opening on the left. Now, take the sundial and the location of the assembly line in a window with an hour circle on the opposite side of the hinge. Now slope on the left side of the case so that your coverage is based on the assembly line.<br />
<br />
Find out the latitude of your current loaction from <a href="http://www.google.com/earth/index.html">google earth</a>. Look at the sundial in the head while on a flat surface. Adjust the angle of toothpick while inclining the CD case according to your latitue.<br />
<br />
Place the sundial on the sun, to check their position and time, and adjust it until it reads the correct time. Your armillary sundial is ready. You can adjust it with the daylight saving time adjustment during couple of moths a year.Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-13516777252564206422010-12-04T05:58:00.001-08:002010-12-07T09:11:53.971-08:00Sundial: An object of curiosity for your children<div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">We know that the Earth rotates on its axis at a constant speed, so that in the last 24 hours, the sun has moved around the Earth. Make a sundial, to use this information to determine the time.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Spend the day by seeing your created sundial with your children and observe how the big Earth rotates on its axis on your little sundial. To get your first idea of preparation spot a flashlight on a replica globe. Turn the globe so that everyone can see how the sun shines in different parts of the Earth at different times. Slowly turn the world and show your children how the sun rises over the continent, its noon, the sun sets on the continent, while rise on the next continent.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><b>Preparation</b></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Give each child a plate of paper or plastic and a piece of clay. Teach them to a round disk with it on the plate.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Each child will cut on it a triangle of cardboard that is relatively stable. They are working hard to built this clay triangles. They also need to make a touch point with the smallest angle and the center of the disc. Right angle in the sand, but not all the way to the edge.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><b>Marking of sundial</b></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Now the fun begins when you began this on a sunny and dry day. Tell the child to place their sundial in a sunny place.Each hour will go to class and do the deep lines in the clay, where the shadow falls. It all started with a paper clip for each child per day if the attack side of the line.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Using a timer or alarm to alert you every time you walked past the hour. In addition, it is easier to mark each hour from 1 to 12.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><b>Follow Up</b></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">You need couple of days to fulfill the project.Each day leave the project around 3pm.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Leave to stay sundial after then.From the next day, you need to watch the every hour that the sundial and how precisely it gives the reading.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Sundials are used depending on the type of clay can be baked, glaze, or dry. Each time you visit the sundial with your children, ask them to say the time by reading it. Ask them questions what happened if you move it in different place of your garden etc..</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">in winter, like now?"</span></div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-55340416755396201232010-12-04T05:25:00.000-08:002010-12-11T13:26:17.391-08:00The Sundial: A Travel through Time<div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Time is something that still flies in the hectic modern world. And now, with time is an elegant style! Look at different brands on the market shows an elegant watch. From the complex, various fashion watches have become more fashionable than ever before! Have you thought about how many people can say time when they asked by somebody,over the years of human history? Without the presence of designer brands, find the time of the day is the most important function of a watch. </span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">The most ancient instrument used to measure the time has always been a sundial. It is an ancient tool is based on scientific calculations, is entirely based on the position of the sun. Sundial can be seen in different types of models. Time is measured by the shadow of the sun. </span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">It is believed that the invention of the sundial to come to around 1500 BC. But historians still do not know where and when it was invented by a sundial. Some reports indicate that some areas of the Middle East fist invented it , and some suggest sundial was also common in the Far East like in China. Sundials were presented in different civilizations for many years significantly in <a href="http://en.wikipedia.org/wiki/Mesopotamia">Mesopotamia</a>. In Egypt, the historian identified the use of an obelisk, a large structure, which they use as a sundial. They were placed at various locations in Egypt. He also showed that the time is definitely important to the Egyptians. Archaeologists also use sundials in stone, flat and found 12 centimeters in length.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">The Greeks and Romans were known for the development of advanced versions of a sundial. Portable set of observed mainly used the Romans. There are more sophisticated models during the Middle Ages and the Renaissance. Since ancient times different types of sundials are invented; with the sign for the azimuth and elevation - sundials can thus be divided into two categories. The height of the sundial, are related to the date which is determined by the height of the sun in the sky. Thus, the scale in line with the sun. Azimuth marks indicate the time at the angle of the sun.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Historians mainly gave importance of the time span of 1500-1800 AD, a very crucial period in the history of the sundial. This was the time when the great pionner like Giuseppe Padovani Biancani built sundials seem completely with perfection.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Sundial was not available to all in the past. Most of the people should have looked at the sundial, placed on public place like market. Today, many people still prefer to collect solar clock, although the modern form of watches available. Perhaps the beauty of the mechanism that makes it stand out and unique tool.</span></div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-90668701084959455142010-11-14T12:31:00.000-08:002010-12-07T09:13:16.343-08:00The Science behind the Invention of Sundial<div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><m:smallfrac m:val="off"> <m:dispdef> <m:lmargin m:val="0"> <m:rmargin m:val="0"> <m:defjc m:val="centerGroup"> <m:wrapindent m:val="1440"> <m:intlim m:val="subSup"> <m:narylim m:val="undOvr"> </m:narylim></m:intlim> </m:wrapindent> </m:defjc></m:rmargin></m:lmargin></m:dispdef></m:smallfrac></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">What could be more boring than walking up in the morning by listening the alarm clock on the table beside the bed? Time does not understand any fun and sometimes we just want to disappear the clock from our everyday life.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">Ever wondered how to monitor the time when all the clocks in the world is no more? Long ago our ancestors were faced with the problem. Watch, were, as we know it today had not yet invented.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">It is unknown to us how human first measure the time. The difference between the dark of night and light was probably the first division of the former recognition. They also noticed that the sun rises above the eastern horizon and climbed under the western horizon, to bring the dark world.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">People observe and think of the shadow of trees, rock, and even own body for a long time in the early morning hours and were becoming shorter and shorter until it disappears when the sun was higher in the middle of the day. They also found that the shadow was still lying on the other side of the tree at dusk.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">The length of shadow gives a approximate idea about how much passed in a day. Hours were probably from someone who put a stick in the ground, and made signs are visible on the ground, invented in the shadow of the rod that represents hour. This shadow of the stick is the oldest form of sundial. </span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">People then judge the length of day from the position of the shadow of a rod. The technical term for the gnomon shadow stick translated from Greek and means one who knows the time.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">Egyptians built obelisks; a sort of stone towers. Everyone can say, in time to see the shadow of the obelisk. Cleopatra's Needle is also a known synonym of Egyptian Obelisks. </span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">As the Earth rotates, we see the movement of the sun across the sky. The sun casts a shadow on the right of the objects in the northern hemisphere. When the sun rose, and at the same time and place on the horizon every day, it would be a shadow clock to adhere to accuracy. But the earth still turns like a top. It revolves around an imaginary line called its axis. Line between the center of the Earth North Pole to the South Pole. Earth's axis is always tilted in the same angle.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">Earth makes a full circle or turn around it`s axis in every 24 hours.. This rotation on its axis is from west to east which eventually causes day and night. Since the Earth rotates, the night side is moving towards the sun, and the day moves towards the dark side.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">The North Pole is tilted toward the sun for six months and gets away from the sun the rest six months because the axis of earth rotation makes around 30 degree angle. The shadow is different in different months of the year because of this reason.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">Because the earth is round, or curved, the soil on the basis of the shadow of the stick will not be the same angle with the sun, like Ecuador. For this reason, the shadow of the stick is not moving at a constant rate throughout the day.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">Finally human discovered that a aiming the gnomon in the north presents a more accurate sundial. Because of the tilt of the Earth, hour characters remain same all over the year,.Following this discovery, people were able to built much better sundial.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">Throughout the history numerous types of sundials were developed to provide time more and more accurately. Egyptians invented time stick in the form of T. It consisted of a vertical post and the crossbar from five hours were written characters on a stick. The stick was faced north in the morning. Shadows of the cross fall on the stick and move till noon. </span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">In the evening, the stick turned to the west. Egyptians built smaller sundial after some trial and errors. The opening of smaller versions of portable sundial tells the time and became important for the Egyptian. this smaller version of obelisk turned as sundial.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">Peasants of the middle ages in Northern Europe using the sun set on the bottom of his wooden clogs. To find out the time, the peasants stands on facing the sun. The hour was reported from the shoe heel shadow cast on the dial.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">Another device, medieval Europe has used is the wheel by hand. Gnomon of the sundial was just a stick; carried out on the corner with the thumb. Gnomon was held in his left hand in the morning, and hand horizontal to the ground and pointed to the west. In the afternoon of the gnomon in the right hand and arm pointed to the east. In search of greater precision in the movement of the Earth's position during the year, flat plate solar hours have changed ever after then.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">In the Renaissance; sundial change rapidly and in a variety of designs have been created. In addition to the hour and minute hands tell the time brands have other properties that are sometimes recorded. Some of the selected sundial during Renaissance show the season, date, time of sunrise and sunset, zodiac signs, and directions.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">People still make the sundial even today`s digital age. Sundial could count on him to keep the correct time, and is often used to set the time on the clock that stopped! Sundial still the most popular way to set the time before clocks to make it easier for people who say that it is time to think of our heritage.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">Today, most people have in their garden sundial for decorations, not as a means of time. With the advent of digital clocks, you should take no more portable sundial. But the sundial should not be forgotten to modern man. The sun always raises in the morning and sets in the evening, resulting in a sundial to tell one of the most reliable method of telling time at present.</span></span></div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-46944911201481081542010-11-14T04:17:00.000-08:002010-12-07T09:05:36.868-08:00Consider a Good Brand of Sundial<div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">What do you know about the Helios German manufacturer if you need a brand for sundial? Not to say extravagantly that they produce some of the best in the market. A German named Carlos Heller, who was a connesure of astronomy from his young age tried to perfectionized a easy to read and accute sundial , but his invention was not sold to public until 2001.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><br />
<span style="font-size: small;">Carlos Heller has a long family tradition of inventors. The chainsaw was invented by his grandfather but could not get patient for that invention. His father founded a manufacturing factory of plastic cups and containers, which became one of the largest manufacturers in Germany.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">The first invention of Carlos was a wooden sundial and after three years he add it up with the electronic control. From there he was better than reinvent the progress this year. He developed his method in recent years, work for a long time with high accuracy using this method since of precise display.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Carlos invention displays the time all that best way for a unique brand on the market today. After all, who wants to be sure they are correct, you need to check about yourself. Take time to this online builder to see the research, an idea of how it works and what brands are available.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">If you want to watch the <a href="http://www.helios-sundials.com/">Helios sundial</a>, you can create a package that includes everything you need to get to start properly. Just time to find this package online, there are those who want to study astronomy, this is really the best way to get absolute precision.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">It may be all the hard work of Heller to so precise his sundial over many year. A time during the year were his higher education, earn promotions and career in engineering. This experience has helped over the years to make his model so ideal.They are more accurate than others, available from numerous manufacturers.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Heller started the <a href="http://www.helios.de">Helios Company</a>, currently producing Helios sundial that is a unbelievable addition in the contemporary market. They use of accurate methods for measuring with the development of optical and laser technologies in manufacturing. The superb manufacturing, which was a brand that all full-time accurate at all times.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">You can take time without any doubt to look at this sundial more for yourselves. You will be what you see and what you are worried about them. Of course, you can not go wrong with this German made dial, if you are interested in astronomy.</span></div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-49743712065061172010-11-14T03:39:00.000-08:002010-12-07T09:09:46.824-08:00Elegances of the sundial<div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">In order to show a beautiful view of the garden; it is not enough to have a clean view of simple green carpeted with flora and fauna. Many of the details, not wanting to grow, to help decorate the garden and the functional elements are often part of the decoration.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">There are many traditional ways to decorate your garden. Most significant element is water in the form of a finely crafted fountain. Products such as fertilizers and insecticides, which are usually in plastic bags, awful, hidden in boxes painted. Garden boundaries materialized decorative materials such as wood or stone.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Depending on the size and shape of terrain, the gardeners can dig a shallow pool is sufficient to support vegetation and fish. It is not unusual for a small bridge is decorated with a pond. One bench, two or three chairs, a table and a pavilion with fire.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Neglected for two centuries, sundials has big comeback in our gardens. Old time has passed: now we need to know what time it is in all places wherever we stay. Time is a silly but unavoidable dilemma in our everyday life; to bring the kids, time to go to the dentist, lunch time, time to meet a friend, etc.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Unlike conventional clocks that say: "It's time" or "late" sundial serve us the same, not a bit more; up to you to how to manage your time. Sundial is a decorative element that tells time, not something that manufactured as beautiful as possible. You may not feel to get sharp time from a sundial. But is a wonderful instrument to spend hour after hour in leisure time.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">The time which you read in sundial agreement with most sunny hours, rather than the secondary glimpse of time: the life and death. It suggests you to live where you live, and it's not a future that may never come to bet.</span></div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-64745701520143256752010-11-14T03:12:00.000-08:002010-12-07T09:10:33.726-08:00When there was no Digital Technology, there was Sundial<div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Look at your Kindle wireless reading device, to enjoy the versatility of the device, not thinking how our ancestors keep tracking of time without digital technology that they mastered from the sundial.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Sundial, old and ancient device known so far were in the second millennium BC, was invented in China, Egypt and the Middle East. They produce both fixed and mobile sundials in this period. To measure the time; sundial uses the sun high in the sky and the length of the shadow it produces.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Ancient sundials use Horizontal or vertical shadow and hollow cup with clock marked lines were among the most important characteristics of the individual models sundial from the Romans and Greeks developed. With the amount of sun as a guide for measuring time, the Romans developed portable dials.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">During the time of Jesus Christus, it was found that the shadow of the wheel parallel to the axis of the earth are a shadow for the same reasons of time and in the same direction all day 365, which gives more reliable measurement of time.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Ivory diptych dial was developed by Johann Gebhart in fifteenth century that makes him a pioneer in improving sundial in human history. In the sixteenth and seventeenth-century Nuremberg became well known for his collection of ivory sundial.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">When the south direction of sundial immediately found people started to use the sundial during travel. The invention of the magnetic compass sundial is useful in the correct orientation. </span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><br />
<span style="font-size: small;">In the Renaissance and medieval time; complex models of sundials were invented. These sundials were used to calculate the exact time. However, most of the sundial, as decoration purposes was used by rich merchants.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Since today sundials have been evolved in numerous categories like horizontal, vertical, brand, equatorial, polar, analemmatic, reflecting sundial etc. Horizontal sundials are mounted on stands and located in the garden. While, vertical sundial set mainly in the walls of buildings and churches. Portable kit has several versions, such as a set of compressed circular mark, pastors and many others.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">You can find a standard sundial in the UK at the center for Science in Nottingham, which was the former home of the famous physicist and mathematician George Green. This sundial can be an admired one by students if they visit that museum.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><br />
<span style="font-size: small;">You can buy for 50 bucks a portable East-West sundial with engraved 4 inch brass.It is wiser to buy very basic models of sundials for less money, but in fact cheaper one are much more complex to read.</span></div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-49441070122819408052010-11-13T10:45:00.000-08:002010-12-07T08:58:24.784-08:00Think of Sundial as a Focal Point of your Garden<div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><m:smallfrac m:val="off"> <m:dispdef> <m:lmargin m:val="0"> <m:rmargin m:val="0"> <m:defjc m:val="centerGroup"> <m:wrapindent m:val="1440"> <m:intlim m:val="subSup"> <m:narylim m:val="undOvr"> </m:narylim></m:intlim> </m:wrapindent> </m:defjc></m:rmargin></m:lmargin></m:dispdef></m:smallfrac></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">When we talk about the sun as tool to tell us time then sundial is the oldest form of scientific instrument and its use in thousands of years from ancient Egyptian period. Sundial is easy, but it's still popular among many gardeners, works great as a focal point for attracting attention in the most unexpected places in the garden or as a perfect end of the road. In the market you have the choice of the finest sundials that can illuminate your garden in any weather!</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">After you aligned and configure the sundial it is easy to use themselves. The sun casts a shadow on sundial gnomon in a flat surface with lines indicating the hours noted. As the sun moves across the sky, created by the edge of the screen with markers of different times at the plate.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Horizontal sundials are based on the style of line with the axis of rotation of the Earth. So if the sundial to be more precise, the style in the direction of True North Point. Style horizontal angle should be equal to the width of the sundial. After hours of sun aligned, it says exactly the time that may overwhelm you.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Sundial is not common to be used to measure time. They are much more likely to want to be used as garden ornaments, and are becoming increasingly popular with gardeners that give the classic elegance of its properties. You can use a sundial at available low prices for your garden. You can choose from a wide variety of choice available in online market, each of which has its own unique design to select high quality materials. </span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">With good Metal section, the wheel will change its visual appeal over time. There are different types available to fit weather and different season. If you can collect the birds and animals for your garden, so why not check out for a solar clock. This beautiful ornamentation of sundial will act as a harmony with natural aesthetics of your garden .</span></div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-9023088436418453172010-11-13T10:11:00.000-08:002010-12-11T02:36:37.855-08:00Idea behind Making a Sundial<div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">You may heard about the term "Noon". I bet you might heard of this term. Noon is a way to say it is exactly 12 hrs. The sun at its highest point at noon or evening. Therefore, when the sun is directly above or high in the sky above you, then the day is at noon. You can tell when it is noon if you don’t have any shade on sunlight.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Sundial is just one way is to visualize it, the dome of the sky or heaven is divided into sections. As the sun rises in the east and move to the west in different blocks of the sky within each hours. These movement of sun in sky gives us about 21 ordinary day time hours in summer and 12 hours of average daytime time all over the year. So if you see the sun in the sky in the morning and when it close to the West, you can see it is afternoon.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">The eastern side of the dome of the sky shows imaginary time of 6AM to 12 AM. The western part of sets the rest 6 hours from 12 PM to 6 PM. Share the idea of heaven, we can split the sky in 12 sections representing the 12 hours. Although it is difficult to imagine on March 12, representing the divisions on each side and then think of splitting into two parts. </span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">You can also use the stick in the ground and measure the time from the shadows. This is called the shadow of the stick. Even as the gnomon. Shadow of the gnomon indicates the time. Mark the shadow on the ground working every hour. This will help you know when this time of year.</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><br />
</div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">It is very easy to make a sundial of your own. Just draw a circle on white cardboard or paper with a compass. Make sure you mark the center of the circle. Bring a vertical gnomon in the middle of the circle. Alternatively, a piece of cardboard, a pencil, pipe cleaner, floor, etc. can be used for the gnomon. Then find a sunny spot to place the sundial. Look at all hours and make a shadow on the edge of the circle at every hour. Mark it with roman numbers that sync with the shadow; and you get your own sundial.</span></div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-84261961052965735762010-11-13T09:40:00.000-08:002010-12-07T09:09:13.153-08:00Sundial in Garden for Classic Loving Homeowners<div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><m:smallfrac m:val="off"> <m:dispdef> <m:lmargin m:val="0"> <m:rmargin m:val="0"> <m:defjc m:val="centerGroup"> <m:wrapindent m:val="1440"> <m:intlim m:val="subSup"> <m:narylim m:val="undOvr"> </m:narylim></m:intlim> </m:wrapindent> </m:defjc></m:rmargin></m:lmargin></m:dispdef></m:smallfrac></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">Sundials are not garden accessories that have been used recently. In fact, it is used to decorate the garden long ago that can date back to Egyptian Period. Sundial not only looks beautiful but also very convenient as it remains to be seen in the usual way. One of the most famous garden decorations, sundials are available now with variety of classic and modern designs. You can even order a sundial on one of the Internet resources very easily to add an extra glamour of your garden.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">There are different types of sundials are available in the market of ornamental use in garden. While, the others are intended for the wall hanging, there is a metal indicator shows the time on the sundial painted to scale . These type of sundials are often referred as vertical sundial, look better if placed in the south side of the wall, otherwise the accuracy of time they present are not precise in most cases. Although, vertical sundials are used mostly in churches, you can place a sundial in your home or can be placed on the obelisk in the garden if you buy a horizontal sundial. They are beautiful and classic.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">One of the most popular of all ornamental use for garden is the landscape one that is used all over the world for a long time. For a landscape type of sundial; piers are installed at various points in the garden for hours, and even plants can be planted too much instead of columns. Sundial Landscape consist mainly Latin numerals and the main pillars were visible.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">Armillary sphere sundials are the most classic one to pick if you are a connoisseur of classic artifacts. In this case, the waiting time at the sundial gnomon set before noon and go look for North Point. Shadows Fall automatically in the hour of 12 and within the required deadlines.</span></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US">You can find the light difference in the test time from 10 to 15 minutes, but in most cases sundials are showing right time. Annual change also affects the duration of sunshine hours. You can always change the time accordingly, but if it is ever installed on time in the summer. Is it not a wonderful idea of relaxing in your garden with a sundial above. From the sundial on the ground, your garden is classic and elegant, without overloading. Sundial is the most beautiful ornament for your garden and it is worth investing in</span></span></div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-75656845240451927772010-11-12T09:23:00.000-08:002010-12-07T09:08:08.781-08:00Innovation of Sundial in the History<div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><m:smallfrac m:val="off"> <m:dispdef> <m:lmargin m:val="0"> <m:rmargin m:val="0"> <m:defjc m:val="centerGroup"> <m:wrapindent m:val="1440"> <m:intlim m:val="subSup"> <m:narylim m:val="undOvr"> </m:narylim></m:intlim> </m:wrapindent> </m:defjc></m:rmargin></m:lmargin></m:dispdef></m:smallfrac></span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><m:smallfrac m:val="off"> <m:dispdef> <m:lmargin m:val="0"> <m:rmargin m:val="0"> <m:defjc m:val="centerGroup"> <m:wrapindent m:val="1440"> <m:intlim m:val="subSup"> <m:narylim m:val="undOvr"> </m:narylim></m:intlim> </m:wrapindent><span lang="EN-US">If we look back in history, people have perceived the sunshine as a beauty and blessings of God. What could be a better instrument than sunshine for measuring your precious hours while you rest in the garden?</span> <br />
<br />
<span lang="EN-US">The early sundial was just a just stick that cast a shadow. The Babylonians and Egyptians built obelisks simply using the sun shade, that means time of day was counted more than 4000 years ago. The Chinese also believed to be perfected some sort if sundial to measure time in the ancient world. </span><br />
<br />
<span lang="EN-US">However, from the archeological inventions; it seems that the Egyptians invented sundial first time in human history around 1500 BC. It was a simple horizontal bar with a raised "T" on one end. Along the east side it shows the hours in the morning and west side in the afternoon, while the length of the shadow along the horizontal bands, labels of the five lines in a unit time measure that says an hour.</span><br />
</m:defjc></m:rmargin></m:lmargin></m:dispdef></m:smallfrac></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US"> </span></span></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: small;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEisB3qF6sflauT4aKQVqYmwYYFpJ5kYK9R-RzNzZryvfSWIuTaRjzSuZoRwOuW0Q4mblEx3QUqF__qSgNwZUYr-m8biIOrGQutGC6LpjCdO2YQsMLFO1kLbK06NWsCHbP1l4LZOf9v9E54/s1600/sundial_earler.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEisB3qF6sflauT4aKQVqYmwYYFpJ5kYK9R-RzNzZryvfSWIuTaRjzSuZoRwOuW0Q4mblEx3QUqF__qSgNwZUYr-m8biIOrGQutGC6LpjCdO2YQsMLFO1kLbK06NWsCHbP1l4LZOf9v9E54/s1600/sundial_earler.jpg" /></a></span></div><div class="MsoNormal" style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><span lang="EN-US"> </span></span></div><span style="font-size: small;"><m:smallfrac m:val="off" style="font-family: Arial,Helvetica,sans-serif;"> <m:dispdef> <m:lmargin m:val="0"> <m:rmargin m:val="0"> <m:defjc m:val="centerGroup"> <m:wrapindent m:val="1440"> <m:intlim m:val="subSup"> <m:narylim m:val="undOvr"> </m:narylim></m:intlim> </m:wrapindent><span lang="EN-US">There was also small sundial for use in the Warfield. These portable sundials were still used throughout Europe until the mechanical clock invented in the 19 century. Over the centuries, the research on sundial went on in order to improve the accuracy of the sundial: bars have been replaced in the early stage of horizontal flat plates, inclined or vertical plates, bowls and cups with half hemispherical shape, it was found that the angle of the gnomon, or pointer in the shadow of the Earth's axis, the moment at any time of year reflects the match.</span> <br />
<br />
<span lang="EN-US">Understanding sundial in astronomy and geometry were used later to measure hour and minute in a calculative way which in turn contributed to the invention of a new section in Mathematics called Trigonometry. </span><br />
<br />
<span lang="EN-US">Sundials have been used throughout the ancient world, but it was later the Greeks and the Arabs, and Romans, which led to its phenomenal changes. Revolutionary European Renaissance contributes to the golden age for sundial. The sundial was just a little time and astronomical instruments for the period 1500-1800 and various types of sundials were developed during this time. Probably the most extensive was the armillary sundial, set arches open arrows and rings.</span><br />
<br />
<span lang="EN-US">Even after the invention of mechanical clocks, sundials were well known for its accuracy of minutes and set up in different churches in the nineteenth century. Complex Renaissance sundial was installed in important public places to see the seasons, date and time of sunrise and sunset. Many sunny hours in this period are still visible; not only in museums, but to "work" continue to garden and buildings, including churches and cathedrals. </span><br />
<br />
<span lang="EN-US">Many of these classic designs of the sundial is now sold by local stores and online shops, is generally regarded as beautiful garden decorating clock, quite seriously. Surprisingly, now a day’s sundials become a popular garden decoration instrument. It is now unavoidable to ignore the sundial as constant elements to present a visual appeal to your garden.</span><br />
</m:defjc></m:rmargin></m:lmargin></m:dispdef></m:smallfrac></span><div style="font-family: Arial,Helvetica,sans-serif;"></div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0tag:blogger.com,1999:blog-5036341924967704062.post-27946954985004433222010-11-12T08:32:00.000-08:002010-12-07T09:13:49.182-08:00Beautify Your Garden with a Sundial<div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">With the combination of beauty and functionality, hours of sunshine enjoyed, what could be better instrument for measuring these precious hours of rest in the garden? Not surprisingly, the sundial are among the most popular garden ornaments - it is easy to obtain and implement, require little or no time due to the attractive and in full compliance with the atmosphere of the garden.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div class="separator" style="clear: both; font-family: Arial,Helvetica,sans-serif; text-align: center;"><span style="font-size: small;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhARCU3v7QhuXzz38QNe59gUDH5Y78Nk44gyHKIzpYC-wxYuTrAEaFQDKmmr8nBdTwaeISTzer_GuQuBbucQnMx7_Rw5Iclg-CiBKfriCZOrV4L6lgWEg1U25uVF_ZS005vVGyjMlM6EUU/s1600/sundial_Garden.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhARCU3v7QhuXzz38QNe59gUDH5Y78Nk44gyHKIzpYC-wxYuTrAEaFQDKmmr8nBdTwaeISTzer_GuQuBbucQnMx7_Rw5Iclg-CiBKfriCZOrV4L6lgWEg1U25uVF_ZS005vVGyjMlM6EUU/s1600/sundial_Garden.jpg" /></a></span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Thorughout the history, numerous classic designs developed with shining view available in local shops, garden centers and online market. Reproductions of classic designs are going and going without any though to stop. In this article you can get some information about the available degin of sundial in today`s market.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Like normal wall cloack, vertical sundial is designed for wall mounting. In its simplest form is a metal pointer (gnomon) to the wall, leave a shadow on the scale of the painted or carved clock. This types are often found in the church.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Other types of these dial are made of a bronze plaque engraved with the central rib and the time scale on the plate. If you have a south sided wall in your room , you can buy one of these, but if the wall is not the south faced it will not give quite accurate results. Sundial for walls that face each other in different directions are also available, but you must find a manufacturer specializing in the sun that affects the clock accuracy.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">In case of Horizontal sundials, you have to stand on a flat surface, like an obelisk. Also, usually made of copper plate and the pointer is recorded and often sold ready to trim mounted on the column. Otherwise, just buy a line of brass plates and mounted on any flat surface of your choice.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Armillary Sphere Sundial are particularly elegant and accurate when used in the past for most astronomical calculations. sych a type of sundial can be found with beautiful patterns in Somerleyton Hall of England.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Set the time on the sundial just before noon and the gnomon point from the sun, so wait in the north. Shadow, a drop of 12 hours and mode.Time is 12 hours must be accurate, but you can find variations of up to 15 minutes earlier or later in the day at certain times of the year due to differences between real time and the WHO. Thus, the sundial is in the best mid-day.</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;"><br />
</span></div><div style="font-family: Arial,Helvetica,sans-serif;"><span style="font-size: small;">Also, remember the effect of any annual change over time. If your line is not permanently attached fairly easy to reset the clock, but if you can not move, it is best to use it exclusively in the summer.After setting the time all that was left in the garden, sit and drink, and feel in the garden on a hot summer day, it is tempting to forget what is probably the most famous qouteof all time "Tempus Fugit"; means Time flies.</span></div>Sazzad Chowdhuryhttp://www.blogger.com/profile/10200381305765010827noreply@blogger.com0