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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 scorpion032 on Monday February 21, 2011 @04:54AM (#2244895)
As of today, meter is defined in terms of the speed of light. We have come a full circle!

> The meter is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.

via: http://physics.nist.gov/cuu/Units/meter.html

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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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