Most clocks, from wristwatches to the systems that run GPS and the internet, work by tracking regular, repeating motions.

Ultraprecise clocks are more than scientific curiosities. They play key roles in navigation, communications and international ...

By directing pulses of laser light at atoms, researchers can study how radioactive elements decay in a matter of seconds. The ...

There has been considerable debate among physicists over the last 15 years about conflicting measurements of the charge ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...