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There’s a new record for the shortest time measurement: how long it takes light to cross a...

Discussion in 'Astronomy and Space News' started by Universe Today, Oct 26, 2020.

There’s a new record for the shortest time measurement: how long it takes light to cross a...

Started by Universe Today on Oct 26, 2020 at 8:42 AM

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  1. Universe Today

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    There’s a new record for the shortest time measurement: how long it takes light to cross a hydrogen molecule
    by Paul M. Sutter

    To measure small differences in time, you need a really tiny clock, and researchers in Germany have discovered the smallest known clock: a single hydrogen molecule. Using the travel of light across the length of that molecule, those scientists have measured the smallest interval of time ever: 247 zeptoseconds. Don’t know what a “zepto” is? …

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