A test using atomic clocks will watch superpositions ride Earth’s curved space-time and see if Einstein can play nice with ...

Scientists in the U.S. have built the most accurate clock in the world—so precise it can measure time down to 19 decimal ...

Jacobson/NIST After two decades of tinkering, scientists at NIST have unveiled the world’s most accurate atomic clock, a ...

Einstein’s theory of relativity shows us that time isn’t constant,it stretches or contracts based on speed and gravity. But ...

The mind-bending concept of time dilation results from a seemingly harmless assumption—that the speed of light is the same for all observers.

If, like me, you can't go a day without making sure your watch is synced to the second, you'll be delighted to learn that a ...

The nodes in a quantum network don’t necessarily have to be computers; they can also be atomic clocks. The cesium atoms that ...

Global positioning systems that support mapping programs are a prime example of how basic science can lead to unforeseen but ...

One example is the atomic clock, which uses the quantum properties of atoms to measure time much more accurately than would be possible with conventional clocks.

According to scientists at NIST in Boulder, their newest atomic clock, the NIST-F4, will help track time more precisely and help put global time on a more accurate frequency.

New Atomic Fountain Clock Props Up the World's Time With Pinpoint Precision Learn about NIST-F4, the latest cesium fountain clock that now stands as one of the most accurate timekeepers in the entire ...

Scientists say that time travel really is possible and that there are already time travellers walking amongst us, but it ...