The National Institute of Standards and Technology (NIST) has dramatically enhanced the precision of time measurement with ...

Quantum sensors could enable resilient U.S. PNT within a few years—but only if America continues to develop and deploy the ...

Black hole and Big Bang singularities break our best theory of gravity. A trilogy of theorems hints that physicists must go ...

The speed of light was a mystery for millennia, a fugitive constant that escaped measurement and understanding. Now among the ...

At Utah State University, researchers are using a radical idea known as the holographic principle to bridge the gap. By ...

Dick Garwin was a true genius. But that genius was not confined to his scientific achievements alone. It was evident in how he approached everything in life, recalls Rita Guenther of the National ...

So steady are these oscillations that atomic clocks keep better time than the spinning earth itself The "pendulums" which regulate them are the vibrating parts of atoms or molecules.