Question

Any 2 different between atomic clock and quartz clock .
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Answer 1

$\bold{Atomic\:Clock}$

An atomic clock is a clock whose timekeeping mechanism is based on the interaction of electromagnetic radiation with the excited states of certain atoms.

$\bold{Quartz\:Clock}$

Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency, so that quartz clocks and watches are at least an order of magnitude more accurate than mechanical clocks.