As the demand for electricity rises in the age of artificial intelligence (AI), global tech companies are focusing on small ...

The most precise clocks in the world will lose only one second every 300 billion years—and someday they might fit in your ...

Physicists have made a breakthrough in the development of a nuclear clock, a new kind of ultraprecise clock that could ...

Four-wave mixing A weak optical signal (red) from a spacecraft transmitter can be amplified noise-free when it encounters two pump waves (blue and green) in a receiver on Earth. (Courtesy: Chalmers ...

Astronauts aboard the International Space Station (ISS) experience a unique phenomenon—sunrise and sunset not just once a day, but as many as 16 times. For those living in space, such views become a ...

It's that time of the year again. It's not just fall, it's also when we "fall back" and set our clocks back by one hour to mark the end of daylight saving time. The first Sunday of November marks ...

This year, that date falls on Sunday, Nov. 3, with clocks rolling back one hour at 2 a.m. that morning. Daylight saving time is a changing of the clocks that typically begins in spring and ends in ...

For over a century, Americans have practiced changing their clocks back and ahead to savor an extra hour of sleep and an extra hour of daylight. With fall in full swing and October nearing its end ...

It’s officially “fall back” time at 2 a.m. Sunday. But after you set the clocks back one hour, Clark County officials are hoping you’ll use some of your weekend time to prepare yourself ...

The simple reason is that it takes much more energy to excite a nucleus into a higher energy state than it does an atom. Atomic clocks typically excite cesium atoms with photons of energy 4 x 10-5 ...

Since the clocks changed in March, Washington has been running on Pacific Daylight Time. But starting this weekend, that will change. This year, the end of daylight saving time falls on Sunday ...