Present observation shows that elementary particles have no internal structure, and have no real size as they are described by wavefunction.
Something that therefore confuses me is that on a lot of online "size comparison" videos and animations, elementary particles are given sizes, some much larger than others. An example.
Where exactly are the sizes for these animations coming from and how are they so precise? Are they just straight made up or are they from some other source that deals with theoretical sizes? Apologies if this question seems silly, but I've been puzzled about it for some time.