Sunrise and sunset were the first indicators of time. Increase and decrease of shadows from sticks, stones and trees were also used to determine the time. Movement of stars for people for some reason was like a giant clock.
When we talk about the clock, we mean a device for measuring time. For people to keep track oftime were known long before they invented these instruments.
Sunrise and sunset were the first indicators of time. Increase and decrease of shadows from sticks, stones and trees also were used to determine the time. Movement of stars has been for a man something like a giant clock.
Man noticed that as the night passed different stars were visible.
The ancient Egyptians divided the night into twelve time periods corresponding to the east 12 stars. They also divided that day the same way as the, and our 24-day timeline was established in the Egyptian division of the day and night. The Egyptians also made shadow clocks – sticks from trees with pointers. In the final result, the shadow or sundial with 12 periods for the distribution of the day, and were the first clocks.
The following types of watches were made using water and fire. A candle with cuts or marks was used as a countdown for time as the candle burnt down from one cut to the other one. As for the water clock, a plate with a small hole in the bottom was put on water. After some time, the floating dish or plate gets filled with water and starts drowning.
Around 2000 years ago man invented another kind of clock - a sand watch. It consisted out of two hollow glass vessels, connected so that sand could move from one vessel to another. The upper vessel was filled with sand in such quantities that it poured into the opening for an hour.
Somewhere in 140 BC the Greeks and Romans used a gear wheel to improve the water clock. A float was inserted in a vessel, rising when the water flowed a thin stream into the vessel. He was connected with a toothed wheel.
The wheel turned the arrow so that is was slowly moving from one time mark to another mark. And in 1400 were invented the first mechanical clocks. The load or cargo was attached to a rope, it turned the coil, which in its turn driven the axis gear wheels and gears. The gear wheels turned the arrow on the dial.
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