Researchers at the Leibniz Institute of Photonic Technology (Leibniz IPHT) in Jena, Germany, together with international ...

The arrow of time can teach us more about how the universe began – and how it will end, says quantum columnist Karmela ...

Like most armed forces across the world, the U.S. military uses the 24-hour clock. But why does military time exist, and when ...

A new method uses helium droplets combined with ultrashort laser pulses to trigger chemical reactions in a controlled way.

July 14-16 gathering to create recommendations for policymakers and leaders to reduce the threat of nuclear war ...

The NPT-based nonproliferation regime has often worked best by giving countries time and incentives to reconsider fateful ...

According to the website, Earth spins faster when the Moon’s orbit takes it significantly north or south relative to the ...

Atomic clocks in current GPS satellites will lose or gain a second on average every 3,000 years. ... They could then use the variations in time to map Earth’s gravitational field much more ...

Atomic clocks in current GPS satellites will lose or gain a second on average every 3,000 years. ACES, on the other hand, ... the more slowly time passes.

Atomic clocks record time using microwaves to measure the frequency of quantum ... “optical clocks are about 100 times more accurate than the current standard of caesium atomic clocks”.

That is why atomic clocks form the backbone of Coordinated Universal Time (UTC) — which is used to set global time zones — and GPS (global positioning system) satellites, which rely on atomic ...

NPL's atomic clock, alongside clocks from around 80 labs worldwide, helps set Universal Coordinated Time (UTC), the official global time standard ...