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A comment on Physicists make most precise measurement ever of the proton's magnetic moment. Parent comment

Re:Physicists make most precise measurement ever of the prot... by geertj on Sunday November 26, 2017 @12:24PM (#15781895)
Nice that the new interval completely lies within the old.

I remember from college that there was an important physical constant where a new, more precise measurement was pretty far outside the range of the previous best measurement. I don't remember which one..

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Re:Physicists make most precise measurement ever of the prot... by evanb on Sunday November 26, 2017 @01:14PM (#15782179)
Depending on when you went to college, you may be thinking of the proton radius puzzle https://en.wikipedia.org/wiki/Proton_radius_puzzle which (to gloss over an enormous amount of detail) amounts to tension between two different ways of measuring the same property of the proton.
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Re:Physicists make most precise measurement ever of the prot... by ISL on Sunday November 26, 2017 @03:31PM (#15782820)
Other possibilities: Neutron lifetime, Newton's constant (twice!)
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Re:Physicists make most precise measurement ever of the prot... by eru on Sunday November 26, 2017 @12:54PM (#15782074)
I think the story was that the first experiment was borked but done by someone famous, so the new experimenters didn't want to disagree too much.
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Re:Physicists make most precise measurement ever of the prot... by semantics on Sunday November 26, 2017 @01:11PM (#15782168)
This happened (allegedly) with the the Millikan oil drop experiment[0] which measured the charge of the electron.

[0] https://en.wikipedia.org/wiki/Oil_drop_experiment

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