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A comment on How Close Are We to the Holy Grail of Room-Temperature Superconductors?. Parent comment

Re:How Close Are We to the Holy Grail of Room-Temperature Su... by mikewarot on Sunday April 16, 2023 @10:34PM (#35596272)
I'd love to have a SQUID of my own to directly detect the |A| field that physics courses usually describe as "merely an abstraction" (Electromagnetic Vector Potential). I have some experiments I'd like to try.
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Re:How Close Are We to the Holy Grail of Room-Temperature Su... by dmlerner on Monday April 17, 2023 @08:19AM (#35599642)
You might enjoy the [Aharonov-Bohm effect](https://en.wikipedia.org/wiki/Aharonov%E2%80%93Bohm_effect). Quantum mechanics says we can in fact detect `A`. A similar effect exists for `phi`.
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