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

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

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

Possibly originating with the English poet Geoffrey Chaucer's "time and tide wait for no man," the idea that time waits for ...

Optical clocks are typically evaluated on two levels — accuracy (how close a clock comes to measuring the ideal “true” time, ...

Jacobson/NIST After two decades of tinkering, scientists at NIST have unveiled the world’s most accurate atomic clock, a ...