[time-nuts] ***SPAM*** NPR Story on Atomic Clocks

[Hal Murray]

The World's Most Precise Clock Could Prove Einstein Wrong

http://tinyurl.com/kuwhq47
http://www.npr.org/2013/08/22/214186448/the-worlds-most-precise-clock-could-pr
ove-einstein-wrong
Audio is 4:12

Nice picture.
"This may look like a mad scientist's garage sale, but it's actually the most 
precise clock ever built."


What a makes a good clock? Andrew Ludlow, a physicist at the National 
Institute of Standards and Technology, says one of the most important 
criteria is stability.

...

That's not much of an effect, but it's big enough for most atomic clocks to 
measure. And Ludlow's clock can register the change in gravity across a 
single inch of elevation. That kind of sensitivity will allow scientists to 
test Einstein's theories with greater precision in the real world.


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