The National Institute of Standards and Technology's new cesium fountain clock is one of the most precise atomic clocks ever ...

“It's a great, great optical clock to use in the tests of fundamental physics,” says Tofful. For example, there is a theory that the fundamental constants might not actually be ...

The University of Wisconsin’s physics department was recognized for its experimentation and creation of one of the most highly-efficient atomic clocks ever. The optical lattice atomic clock is behind ...

The result is a clock with a total a total systematic uncertainty of 2.2×10⁻¹⁶ — a precision that means it loses less than a second every 140 million years. This extremely subtle lag is ...