Question

What is an atomic clock? Where is it kept?

Answer 1

An extremely accurated type of clock which is regulated by the vibrations of an atmoic or molecular system such as caesium or ammonia..

Answer 2

Answer:

Definition of Atomic clock

Atomic clock is that type of clock which is a clock instrument  that uses an electron transition frequency in the microwave. Atomic clocks are used to coordinate systems that require extreme precision, such as Global Positioning System ( GPS ) navigation and the Internet

Atomic clock kept

In India it is kept in National Physical Laboratory of India New Delhi