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How was time measured in olden days?

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Omar Qayed

on 23 October 2013

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Transcript of How was time measured in olden days?

How was time measured in olden days?
How did people tell time in olden days ?
In the olden days, the clock was not invented yet. So, the people were using things to know what time is it such as :
The Sun.
Sand Clock.
How was time measured by the "Sand Clock" ?

A "Sand Clock" is an instrument for measuring time, consisting of two glass chambers connected by a narrow neck and containing a quantity of sand, mercury, or another flowing substance that trickles from the upper chamber to the lower in a fixed amount of time, often one hour.
How was time measured by the "Sun" ?
At olden days they used the "Sun" by just knowing the movement of the sun. They didn't need to know hours or seconds or even months. They just needed to know if it was time to get up, time to go to bed or time to plant.
How was time measured by "Sundials" ?
A sundial is a device that tells the time of day by the position of the Sun. In common designs such as the horizontal sundial, the sun casts a shadow from its style onto a surface marked with lines indicating the hours of the day. As the sun moves across the sky, the shadow-edge aligns with different hour lines.
Done by : Omar Qayed G7B
Time is now measured by an easier way. By using a clock you can now know what hour, minute or second it is.You can also know whether it is A.M or P.M.
How time is now measured ?
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