Nuclear clocks are a technology researchers have been working toward for decades. New research in theoretical physics brings them closer to reality.

A new atomic clock is one of the world’s best timekeepers, researchers say — and after years of development, the “fountain”-style clock is now in use helping keep official U.S. time. Known as NIST-F4, ...

Every single day, humans rely on hundreds of hidden clocks. GPS location, Internet stability, stock trading, power grid management ... all rely on atomic clocks in order to work. Many of those clocks ...

Vladan Vuletić with members of his Experimental Atomic Physics group. From left to right: Matthew Radzihovsky, Leon Zaporski, Qi Liu, Vladan Vuletić, and Gustavo Velez. Every time you check the time ...

What we’re able to do is divide the same length of time into smaller and smaller units, Adam Kaufman described, speaking to how entanglement sharpens the tick of optical atomic clocks. That one line ...

“Humanity Edging Closer To Catastrophe”: Iconic Doomsday Clock moves one second closer to midnight as global existential threats rage. Clock factors include nuclear weapons, climate crisis, artificial ...

Scientists are building a nuclear clock so precise it could detect dark matter and test the laws of physics. The secret? A rare, low-energy transition in thorium-229. Here, we explain the science of ...