Atomic clocks are timekeeping devices that use the vibrations of atoms (commonly cesium, rubidium, or hydrogen) as their ...

Atomic clocks, such as those used on the Global ... based clock cooled by lasers and combined with a hydrogen-based maser, a ...

One of the most vital pieces of equipment housed at the Space Science Center is the University's hydrogen maser. Given to the center in 2016 by MIT, the device uses hydrogen gas to determine an atomic ...

In the hydrogen maser, a continuous flux of excited atoms ... to high-stability clocks and enable the further exploitation of atomic reference lines, with a projected stability in lattice clocks ...

Photonic technology can now be used to construct miniature sources of high-frequency radio waves that have exceptional spectral purity. In the early 1980s, researchers at NASA's Jet Propulsion ...