Question

Which atom is used in the clocks?

Answer 1

Answer:

cesium atom

Specifically, it uses a glass cell of rubidium gas that changes its absorption of light at the optical rubidium frequency when the surrounding microwave frequency is just right. The most accurate atomic clocks available today use the cesium atom and the normal magnetic fields and detectors.

Answer 2

Answer:

cesium

Inside a cesium atomic clock,cesium atoms are funneled down a tube where they pass through radio waves . If thisfrequency is just right 9,192,631,770 cycles per second then the cesium atoms "resonate" and change their energy state