Nuclear weapons tests are among the most violent events humans can trigger, and that violence leaves fingerprints in the ...

Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.

Particle and nuclear physics evokes evokes images of huge accelerators probing the extremes of matter. But in this round-up ...

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The time is nigh for nuclear clocks. In a first, scientists have used a tabletop laser to bump an atomic nucleus into a higher energy state. It’s a feat that sets scientists on a path toward creating ...

Almost exactly 200 years ago, French physicist Sadi Carnot determined the maximum efficiency of heat engines. The Carnot ...

The nucleus of an atom is now the modern version of sand flowing through an hourglass. Researchers have spent 15 years trying to increase accuracy in timekeeping. The U.S. standard currently relies on ...

RESEARCH TRIANGLE PARK, N.C.-- Quantum information represents one of the Army’s most promising science and technology investments for the future. Several technologies in this field, ranging from ...

For two centuries, students have learned that heat flows and engines work according to rigid limits that no machine can beat.

Even if you’re one of the most precise physicists on the planet — as University of Delaware Professor Marianna Safronova is — you still will need collaborators whose skills complement your own and ...

Atomic clocks are the most accurate timekeepers we have, losing only seconds across billions of years. But apparently that’s not accurate enough – nuclear clocks could steal their thunder, speeding up ...

The NPL has developed a miniaturised Atomic Fountain Clock that promises to make accurate timekeeping technology smaller.