Who decides how long a second is?
A brief history of timekeeping from John Kitching and TED-Ed.
Discover how scientists developed atomic clocks, which use the vibrations of atoms to measure and maintain a globally consistent time.
A brief history of timekeeping from John Kitching and TED-Ed.
Discover how scientists developed atomic clocks, which use the vibrations of atoms to measure and maintain a globally consistent time.
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