Mechanical clocks don’t need batteries or plugs, they use a spring inside them. When you wind it, the spring tightens and stores energy like a coiled up snake. As the clock ticks, the spring slowly unwinds, making gears turn and hands move around the face of the clock. It’s like having a little engine hidden inside that keeps time going without any help from electricity!
Examples
- A kitchen timer with a winding knob keeps working even after it’s unwound once.
- A grandfather clock keeps ticking as its weight slowly lowers down.
- Wind-up toys run on the same kind of spring energy that mechanical clocks use.
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See also
- How Do Clocks Know the Time Without Being Connected to Anything?
- How Do Clocks Know the Time?
- How Do Clocks Know What Time It Is?
- How Does a Clock Know When to Ring?
- How Do Clock Towers Work?
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