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Re:Evidence that the key assumption made in discovery of dar... by Koshkin on Tuesday January 07, 2020 @11:43AM (#21981617)
Indeed you can, if you realize that the place occupied by the "point particle" is described by its wavefunction.
Re:Evidence that the key assumption made in discovery of dar... by roywiggins on Tuesday January 07, 2020 @12:36PM (#21982249)
I know! But when you poke it, it still acts like a particle and the wavefunction localizes again, right? It doesn't exactly "puff up" like a billiard ball. Electrons don't really get bigger when they are put into states where their position is less localized.

But the expansion of space does "stretch" light- or at least, the wavelength gets longer, so it's not not happening.