Zeptoseconds: New world record in short time measurement

Re:Zeptoseconds: New world record in short time measurement by thricegr8 on Friday October 16, 2020 @04:17PM (#24804624)

From the article: "They measured how long it takes for a photon to cross a hydrogen molecule: about 247 zeptoseconds for the average bond length of the molecule. This is the shortest timespan that has been successfully measured to date."

Incredible.

Where the mind truly starts to boggle is remembering that a zeptosecond still falls incredibly short of the Planck time/distance at 5×10−44.

It's certainly exciting to speculate how much closer to an actual Planck /measurement/ we may yet achieve.

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Re:Zeptoseconds: New world record in short time measurement by chrisshroba on Friday October 16, 2020 @05:37PM (#24805288)

For an idea of scale, 247 zepto seconds is as close to the Planck Time (on a log scale) as it is to about two weeks (13.1 days)[1]

[1]: https://www.wolframalpha.com/input/?i=5.39e-44%2F247e-21%3D2...

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Re:Zeptoseconds: New world record in short time measurement by _Microft on Friday October 16, 2020 @06:05PM (#24805500)

Alternative wording: the ratios of these pairs (13 days / 247zs) and (247zs / t_P) are approximately the same.

t_P being the Planck time here.

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Re:Zeptoseconds: New world record in short time measurement by SilasX on Friday October 16, 2020 @07:07PM (#24805866)

Another alternate wording: 247 zs is the geometric mean of t_P and 13.1 days.

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Re:Zeptoseconds: New world record in short time measurement by waheoo on Friday October 16, 2020 @09:02PM (#24806619)

Planck time, 247 zeptoseconds, and 13.1days are equally far apart on log scale.

Planck time is really small.

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Re:Zeptoseconds: New world record in short time measurement by pwr22 on Saturday October 17, 2020 @03:43AM (#24808198)

Thanks, I can understand this one :P

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Re:Zeptoseconds: New world record in short time measurement by naniwaduni on Friday October 16, 2020 @09:28PM (#24806745)

https://www.wolframalpha.com/input/?i=%28247+zs%29%5E2%2Fpla...

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Re:Zeptoseconds: New world record in short time measurement by elcomet on Saturday October 17, 2020 @04:24AM (#24808404)

So we're still pretty far ! As I imagine an order of magnitude smaller requires an order of magnitude more money and complex equipments.

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Re:Zeptoseconds: New world record in short time measurement by bmcahren on Friday October 16, 2020 @05:48PM (#24805382)

Thank you

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Re:Zeptoseconds: New world record in short time measurement by pjanoman on Friday October 16, 2020 @06:39PM (#24805693)

And for anyone that wanted how large a zeptosecond is; it's 10^-21.

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