EEVblog #423 – HP5061A Atomic Clock Cesium Beam Frequency Standard


A look at one of the original HP 5061A Cesium Beam atomic clock frequency standards used in the “flying clocks” experiment in the 1960’s, that showed (not definitely at the time) that time dilation as part of Einstein’s relatively theory was correct. The effect was not confirmed until a more precise run in 1971, again with the same clocks.

Forum Topic HERE

About EEVblog

Check Also

EEVblog #1249 – How To Read Timing Diagrams

A tutorial on how to read timing diagrams. An essential skill for designing and understanding ...