Atomic clocks use quantum physics and the resonant frequency of atoms, like cesium, to define time. Modern timekeeping relies on the accuracy of atomic clocks, which revolutionized timekeeping by ...

After reading The Universe in a Nutshell by Stephen Hawking a while back, I discovered that he may have made a mistake — and probably Albert Einstein, too! It has to do with the concept of time ...

On a recent trip to Tucson, I heard zero complaints about a pending hour of lost sleep. On March 10, 2024—when most clocks across the country will advance one hour for daylight saving time—no one in ...