How Does a Clock Keep Time?

Imagine a clock as a tiny dancer that moves in perfect rhythm. Every swing of the pendulum or tick of the gears is like one step in its dance, and each step tells us how much time has passed. The more precise the steps, the better it keeps track of minutes and hours.

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Examples

A grandfather clock uses a pendulum that swings back and forth every second.
Gears inside the clock turn slowly as time passes.
A digital watch counts seconds using a tiny crystal that vibrates rapidly.

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Categories: Science · clocks,timekeeping,mechanics,science,inventions