How Do We Measure Time Atomic Clocks

Discover how scientists developed

I got a tour of the

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What if

Most of the

Bill shows the world's smallest

Meet NIST-F4, NIST's newest fountain clock and our nation's primary standard for the

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A continuation of my last video on how quartz clocks function.

1:40:29 – Atomic

How Scientists

Dr. Steve Jefferts of the National Institute of Standards and Technology in Boulder, Colorado is an expert on how we

Explore: Understanding How Cesium-133 Dictates

Atomic clocks

From ancient sundials to today's

We talk about the latest results from Jun Ye's group about

How do people around the world keep