June 8, 2010
4 things used in the definitions of what?
Cracked by varuns88 , dineshk , Rogi , Manish Achuth , Aparna , Ganesh Prasad , Dibyo , Ananth , krudebox , Thejas V R , Rahulk , Anubhav , Shwetha Maiya , udupendra , Logik , Xanda , Bharath , Qbrain , shrik and Higgers
The metre, of course.
- The platinum-Iridium meter bar.
- Length of pendulum with half-period of 1s.
- 1650763.73 wavelengths of light emitted by “Krypton” 86
- 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.