With decades of experience in national security, Jill Hruby joins the Bulletin’s Science and Security Board to help confront ...

The second law of thermodynamics demands that if we want to make a clock more precise – thereby reducing the disorder, or entropy, in the system – we must add energy to it. Any increase in energy, ...

North Korea appears unlikely to deliberately escalate tensions in the coming year as the regime will prioritize domestic development. However, its nuclear policy, burgeoning relations with Russia, and ...

The laser beam traveled 3.6 kilometers (over 2 miles) via fiber optic links to NIST, where a frequency comb (acting as a “ruler for light”) allowed the aluminum ion clock’s laser to adopt its superior ...

However, aluminum is tricky. The element is difficult to measure with lasers, as well as cool to absolute zero. But when ...

There's a new record holder for the most accurate clock in the world. Researchers at the National Institute of Standards and ...

For nearly a century, scientists around the world have been searching for dark matter—an invisible substance believed to make ...

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

MITCHEL FIELD, N.Y., July 11, 2025 (GLOBE NEWSWIRE) -- (“FEI” or the “Company”) (NASDAQ-FEIM), a leading provider of precision timing and frequency technology, would like to clarify ...

July 9 was predicted to have a shorter "length of day" than usual due to an increase in Earth's rotation speed. See which ...

The world spins faster for 3 days straight in July and August, prompting experts to monitor Earth's changing rotation.