The device which measures time by the position of the Sun is called
sundial.Watch/clock has been created or invented as sundial at first. It
was a very early form of clocks.
Most probably the gnomon was the first device to indicate the time of day. The gnomon consisted of a vertical stick or pillar. Casting a shadow or throwing light onto the dial face or dial plate, the surface of the Sundials, it indicates time of day. Mainly the length of the shadow indicates time. The shadow rotates clockwise as the sun raises from one side to the opposite side or more like earth rotates counter clockwise as a result we see the sun raising at the east and going down at the west. This was the history of the time at 5000-3500 BC.
At the time of 2500-2000 BC obelisks were build by Babylonians and Egyptians. The obelisks which shadows formed a kind of sundial. Those made possible citizens to divide the day into two parts by indicating noon. When the shadow at noon was the longest or shortest of the year, they showed the year’s longest and shortest days.
A sundial comes from Berossus, a Babylonian priest and author in 300 BC. The sundial is a cubical block into which a half-sphere is cut. At the center a small bead is fixed.
Introducing trigonometry into mathematics, supply the tool for plotting hour lines with simple arithmetic calculations instead of the more cumbersome geometric constructions. This is the story of 150 AD.
At 1300 AD, The first all-mechanical clock is made which is a large iron-framed structure. It is driven by weights. The great age of the European sundial is 1500 - 1800. Sundials gradually come into use with equal hours.
In 1979, LLC, the founder of Accurate Sundials, starts designing, building and testing many types of accurate sundials. For each major type of sundial to make the 174 calculations, he designs a computer program which go into each custom design.
Along with expert support in computer aided design and machine shop technology, the knowledge gained by Accurate Sundials, LLC in 24 years of research, results in the attractive offering of elegant and accurate solid brass, copper and aluminum sundials.
After clocks were invented, people did not stop to make sundials. Until watches were invented to make the way of keeping time easier for people to tell time wherever they were, the sundial was still the most popular way of keeping time. At present most of the people have sundials in their gardens. They use them for decoration rather than as a way of keeping time. Though the invention of the digital wristwatch give comfort to the people that they no longer need to carry around a portable sundial, but sundials should not be forgotten by modern people. The making sundials remain one of the most reliable methods of telling time of momemnts.
Most probably the gnomon was the first device to indicate the time of day. The gnomon consisted of a vertical stick or pillar. Casting a shadow or throwing light onto the dial face or dial plate, the surface of the Sundials, it indicates time of day. Mainly the length of the shadow indicates time. The shadow rotates clockwise as the sun raises from one side to the opposite side or more like earth rotates counter clockwise as a result we see the sun raising at the east and going down at the west. This was the history of the time at 5000-3500 BC.
At the time of 2500-2000 BC obelisks were build by Babylonians and Egyptians. The obelisks which shadows formed a kind of sundial. Those made possible citizens to divide the day into two parts by indicating noon. When the shadow at noon was the longest or shortest of the year, they showed the year’s longest and shortest days.
A sundial comes from Berossus, a Babylonian priest and author in 300 BC. The sundial is a cubical block into which a half-sphere is cut. At the center a small bead is fixed.
Introducing trigonometry into mathematics, supply the tool for plotting hour lines with simple arithmetic calculations instead of the more cumbersome geometric constructions. This is the story of 150 AD.
At 1300 AD, The first all-mechanical clock is made which is a large iron-framed structure. It is driven by weights. The great age of the European sundial is 1500 - 1800. Sundials gradually come into use with equal hours.
In 1979, LLC, the founder of Accurate Sundials, starts designing, building and testing many types of accurate sundials. For each major type of sundial to make the 174 calculations, he designs a computer program which go into each custom design.
Along with expert support in computer aided design and machine shop technology, the knowledge gained by Accurate Sundials, LLC in 24 years of research, results in the attractive offering of elegant and accurate solid brass, copper and aluminum sundials.
After clocks were invented, people did not stop to make sundials. Until watches were invented to make the way of keeping time easier for people to tell time wherever they were, the sundial was still the most popular way of keeping time. At present most of the people have sundials in their gardens. They use them for decoration rather than as a way of keeping time. Though the invention of the digital wristwatch give comfort to the people that they no longer need to carry around a portable sundial, but sundials should not be forgotten by modern people. The making sundials remain one of the most reliable methods of telling time of momemnts.
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