The error was quoted at about 20%, see: https://arxiv.org/pdf/2010.08298.pdf The yahoo article might have mentioned that 247 zs is just the bond length divided by speed of light. I wouldn’t compare it to a laser pulse shaping, but anyways it’s impressive if they can resolve spatial orientation of a molecule. Most people don’t have equipment like that. —Brad
On Oct 19, 2020, at 9:38 PM, Dan Asimov <dasimov@earthlink.net> wrote:
----- Zepto = 10^-21. A single photon ejected the two electrons from a hydrogen molecule. The time interval between the ejections was 247 zs, more or less depending on the orientation of the molecule.
https://news.yahoo.com/zeptosecond-femtosecond-163929049.html -----
I may be impressed when I know an upper bound for the maximum possible error. (It took me 246 zeptoseconds plus around a minute to write this post.)
—Dan
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