Boiledbeans

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June 8, 2010

-er or -re?

srikanth @ 11:59 pm, GMT +0000 ( 1276041582 ) Play

4 things used in the definitions of what?

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Answer:

The metre, of course.

  1. The platinum-Iridium meter bar.
  2. Length of pendulum with half-period of 1s.
  3. 1650763.73 wavelengths of light emitted by “Krypton” 86
  4. Distance traversed in vacuum by light in 1/299792458 of a second, measured using a He-Ne laser.

Those of you who prefer the American spelling can skejjule some time to think about your lives.

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