EEVblog – The Electronics Engineering Video Blog
No Script, No Fear, All Opinion
Hosted by David L. Jones
And presented in Dave's unique non-scripted overly enthusiastic style!
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EEVblog #423 – HP5061A Atomic Clock Cesium Beam Frequency Standard
Posted on February 13th, 2013 5 comments
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
EEVblog #423 - HP5061A Atomic Clock Cesium Beam Frequency Standard [ 9:37 | 36.33 MB ] Download (1510)5 responses to “EEVblog #423 – HP5061A Atomic Clock Cesium Beam Frequency Standard”
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A portable piece of history !
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Hi,
It’s really nice episode!
A couple of years ago I was participating in modern HP5071A caesium beam tube replacement. It was also interresting to observe clock dying process while caesium atoms amount was too small so every clock regulation circuit was saturated and standard’s frequency started do drift away from other reference exponentially
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Dave, I please make more of theese short episodes, they are easier to watch over a fast meal.
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Dontronics for embedded stuff:
Pixel_K February 13th, 2013 at 20:24