Question

why the clock has only 24 hours, and who invented it?

Answer 1

because earth rotates on its axis and 1 complete rotation takes 24 hours that means in a one day there are 24 hours

Answer 2

hi there!
here is your Answer:
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 24-hour day comes from the ancient Egyptians who divided day-time into 10 hours they measured withdevices such as shadow clocks, and added a twilight hour at the beginning and another one at the end of the day-time, says Lomb. "Night-time was divided in 12 hours, based on the observations of stars
Christiaan Huygens have invented clock
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