Question

write any two difference between simple clock and atomic clock
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Answer 1

Explanation:

Ordinary clocks measure time by counting, quartz crystal vibrations or mechanical pendulum oscillations. ... Atomic clocks measure the oscillations in electron transitions by the radition emited in the form of microwave or higher frequency electro magnetic waves.

Answer 2

Differences between simple clock and atomic clock;

Simple clock

• A simple clock works using the principle of harmonic oscillation.
• In a simple clock, a heavy point mass referred to as a bob is hung from a support that is rigid, using a massless string that is inextensible and this bob acts as the pendulum.

Atomic clock

• The atomic clock measures times using based on the frequency of atomic radiation. As the energy of atoms in different energy levels differs, their frequency of electromagnetic radiations also differs.
• The naturally oscillating atoms play the role of the pendulum.
• The atomic clock is the most precise accurate time measuring device and the SI unit of time, seconds is based on the principle of the atomic clock.