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Who Decides How Long A Second Is? [Solved]
In 1967, the Thirteenth General Conference of the International Committee for Weights and Measures officially defined the second as “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 caesium-133 atom.” And that has remained 24 Mar 2017
Who decides how long a second is? - John Kitching
Discover how scientists developed atomic clocks, which use the vibrations of atoms to measure and maintain a globally consistent …
Who decides how long a second is?
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Who decides how long a second is? | Who invented Clock? | K & Stories (SKZ)
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