We use clocks to know what time it is. A clock tells us when to wake up, when to eat, and when to go to bed. Some clocks are big and in the sky, like the sun or moon, while others are small, like a watch on your wrist. Long ago, people used things like sundials and hourglasses to tell time. Now we have digital clocks that work everywhere.
Examples
- A sundial tells time based on where the shadow falls.
- Your phone clock knows what time it is because it connects to a network of atomic clocks.
- A stopwatch keeps track of how long you run around the block.
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See also
- How Does a Clock Measure Time Exactly?
- How Do Clocks Keep Accurate Time?
- How Does a Clock Measure Time Without Electricity?
- How Does a Clock Measure Time So Accurately?
- How Do ‘Clocks’ Measure Time Accurately?
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