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Scientists measure shortest unit of time ever – a ‘zeptosecond’ – Yahoo News Australia

Researchers measured the passage of a photon across a molecule, using a technique involving X-rays and rippling waves.

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Most of us think of a microsecond or a nanosecond as being about as brief as time measurements get – but German scientists have gone quite a bit better. 
This week, atomic physicists measured a process that lasted 247 zeptoseconds, the shortest timespan ever successfully measured.
A zeptosecond is 0.000000000000000000001 of a second far shorter than the previous shortest time interval, a femtosecond. A femtosecond equals 0.000000000000001 seconds.
Researchers measured the passage of a photon …

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