SpaceTiger
Staff Emeritus
Science Advisor
Gold Member
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ZapperZ said:And this is why I "skimmed" over such assertion because I can't believe why such a thing would be "new" and "unknown".
Who said it was? Your habit of putting words in quotes that I never used is really obnoxious.
A superconductor, or a superfluid, is exactly just THAT! It is the clearest manifestation of QM wavefuction at the MACROSCOPIC SCALE, over large distances, and over a very long time[1] and in a 3D box, to boot!
Superconductor behavior is not even close to the same thing as the case we were discussing, so I don't see your point. If you're saying that the existence of superconductors implies that the infinite well solution should collapse to quantum behavior on short timescales, you're just wrong. If you're trying to answer your own question about cases where electrons should be treated quantum mechanically on large scales, then yeah, that's an example of it...