October 19, 2020
Science News

Meet the zeptosecond, the shortest unit of time ever measured – Live Science

Scientists have measured the shortest unit of time ever: the time it takes a light particle to cross a hydrogen
molecule. 
That time, for the record, is 247 zeptoseconds. A zeptosecond is a trillionth of a billionth of a second, or a decimal point followed by 21 zeroes and a 1. Previously, researchers had dipped into the realm of zeptoseconds; in 2016, researchers reporting in the journal Nature Physics
used lasers to measure time in increments down to 850 zeptoseconds. This accuracy is a h…

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