Collect information about time measuring devices that were used in the ancient times in different parts of the world. Prepare a brief write up on each one of them. The write up may include the name of the device, the place of its origin, the period when it was used, the unit in which the time was measured by it and a drawing or a photograph of the device, if available.
The time measuring devices that were used in the ancient times in different parts of the world are:
1. Sun Dial
2. Water clocks
3. Sand clocks.
Sun Dial:
This time measuring device uses a spot of light or shadow by the sun’s position on a reference scale. The prototypes of Sundials are seems to be originated in Russia and they were used in 1830s.
Water Clocks:
This time measuring device uses regulated water flow of liquid i.e. inflow or outflow of liquid to calculate the time. They are supposed to be existed in 16th Century in Egypt.
Sand Clocks:
The sand clocks are supposed to be invented at Alexandria about 150 B.C.
