New Smallest Time Measurement: How Long It Takes a Photon to Cross a Hydrogen Molecule "This is the shortest timespan that has ever been measured and amounts to about 247 zeptoseconds (a trillionth of a billionth of a second, or 10-21 seconds). "

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Submitted October 17, 2020 at 08:33PM by solar-cabin https://ift.tt/351IEdu