Re:Evidence that the key assumption made in discovery of dar...
by roywiggins on Tuesday January 07, 2020 @09:25AM
(#21980137)
You can't make an electron bigger, so it can't be stretched out. Other point particles are the same. The forces that hold physical stuff together are much more powerful than the gentle expansion of space, so we don't see people and planets dissolving.
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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.