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Unit Size Notes yoctosecond 10 −24 s zeptosecond 10 −21 s attosecond 10 −18 s shortest time uncertainty in present measurements femt...
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The major fault with sundials and shadow clocks is obvious...They don't work at night! Amenophis I, the king of Egypt, wanted ... -
The first mechanical clocks had a weight that would slowly lower, moving gears which moved a hand which showed the hour. They could ... -
Some people can tell what time it is by looking at the sun. But I have never been able to make out the numbers... -
The Egyptians were the first people who created a twenty-four hour day. Time was a little bit different in those days. The night wa... -
Time is a dimension in which events can be ordered from the past through the present into the future,and also the measure of durations of ...
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