One of the biggest challenges in modern physics is uniting quantum mechanics and general relativity. A new experiment may ...

Researchers use electron ptychography to capture atomic vibrations in twisted 2D materials with record-breaking precision.

Scientists propose using quantum-entangled clocks to test how gravity affects quantum mechanics in curved spacetime.

A test using atomic clocks will watch superpositions ride Earth’s curved space-time and see if Einstein can play nice with ...

The mind-bending concept of time dilation results from a seemingly harmless assumption—that the speed of light is the same ...

He worked to develop an atomic clock that is essential to global positioning systems and helped confirm a rare state of ...

Frequency Electronics clarifies revenue expectations for its TURbO atomic clock and outlines potential market growth opportunities.

The Brief July 9 is expected to be one of the shortest days in history, but you won’t notice a difference. The Earth has been moving faster in recent years, and scientists aren’t exactly sure why.

Scientists anticipate that Earth's rotation will quicken enough to create three shorter days between July and August, starting Wednesday, July 9.

An attosecond—or 0.000000000000000001 second—is no time at all for a person. That is not so for electrons, atoms and ...

The NPT-based nonproliferation regime has often worked best by giving countries time and incentives to reconsider fateful decisions. Israel’s war of choice against Iran is likely to have the opposite ...