Cesium is a metal in group IA of the periodic table with atomic number 55, an atomic weight of 132.905, and a density of 1.9 Mg/m 3. Its melting point is 28.7 C, and it boils at 690 C. The electronic ...

Cesium fountain clocks such as NIST-F4 are a ... versions of UTC using their own time scales; NIST's version, for example, is known as UTC(NIST). Those national time scales are then used to ...

This photograph is an example of DNA separated in a cesium chloride density gradient. Two tubes containing cesium chloride gradients are arranged vertically next to each other. The gradients have ...

When the microwave signal exactly matches the material’s resonance frequency — 9.192631770 GHz, in the case of cesium — the number of atoms changing state will be at a maximum, so you know ...