Quote from: Pete
That's a misconception of quantum waves. A wave is merely a probability description of where a particle is. E.g. when an electron is detected it has no spatial extent. Any spatial extent is merely the probability of where it would be found had its position been measured. All particles are point particles with the exception of particles made up of quarks.
Can that be rephrased as that the electron has a spatial extent (before measuring or interacting) that may be any size but that it is most probably vanishingly small? (I am assuming that the probability graph of its position peaks at the centre of that undefined spatial extent area)
I am not sure if I have not written gobble-de-gook