Question

Where are atomic clocks kept

Answer 1

Step-by-step explanation:

The master atomic clock ensemble at the U.S. Naval Observatory in Washington, D.C., which provides the time standard for the U.S. Department of Defense. The rack mounted units in the background are Microsemi (formerly HP) 5071A caesium beam clocks.

Answer 2

Answer:

Your answer is

The U.S. Naval Observatoy.

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