A watch is like a tiny machine that counts time by moving parts inside it, just like your toy car moves when you wind it up.
Like a Clock Inside Your Wrist
The Gears and the Pendulum
Inside the watch are lots of small gears, which are like tiny wheels that fit together. As they turn, they make the hands on the face of the watch move, just like how your toy car moves when you push it. Some watches have a pendulum, like a little swing, that helps keep time steady, so the gears don’t get confused.
The Second Hand is Like Your Blink
Every time the pendulum swings, it helps the gears tick forward one second, just like how your blink happens once every few seconds. And there you go! You’ve got a watch that tells you when to stop playing and go to bed.
Examples
- A grandfather's pocket watch keeps working for years with just a little wind.
- The second hand moves because of gears and springs.
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See also
- How Does China's atomic clock: The most accurate clock in the world Work?
- How Does A Brief History Of (Keeping) Time Work?
- How Does TimeLine - A Brief Introduction To The History Of Timekeeping Devices Work?
- What are cesium beam clocks?
- How ultraprecise nuclear clocks could transform timekeeping?