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A comment on Why nothing can go faster than the speed of light. Parent comment

Re:Why nothing can go faster than the speed of light by beza1e1 on Tuesday February 22, 2011 @01:32AM (#2249025)
So how long is a second?
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Re:Why nothing can go faster than the speed of light by a1k0n on Tuesday February 22, 2011 @01:50AM (#2249066)
via Wikipedia: The duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom.

So I guess that means a meter is 30.66331898849836976219 cesium-133 transition periods.

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