dual atomic clock tagged posts

One of NIST’s ytterbium lattice atomic clocks. NIST physicists combined two of these experimental clocks to make the world’s most stable single atomic clock. The image is a stacked composite of about 10 photos in which an index card was positioned in front of the lasers to reveal the laser beam paths. Credit: N. Phillips/NIST

What could be better than a world-leading atomic clock? 2 clocks in 1. Physicists NIST have combined two experimental atomic clocks based on ytterbium atoms to set yet another world record for clock stability. Stability can be thought of as how precisely the duration of each clock tick matches every other tick that comes before and after...