Hiya, I've been reading up on EM waves and I feel I'm slowly starting to get it, but I'm not entirely sure if I do, so I was wondering if anyone could help so I can be sure I'm not making some false conclusions here. I can't seem to find any answers to the less certain parts here So as I understand it, these EM waves contain an oscillating electrical field part. One that has a certain direction (which seems to be polarity based? right?) and an amplitude that oscillates between positive and negative. So that an electron or proton that the light passes through would end up bobbing along with the wave, following the field. With electrons/protons basically bobbing in opposite ways because of their opposite charges. And electrons that are all at equal distance from the lightsource would all have to bob up/down exactly synchronized, because they're under the influence of equal electric fields. And at shorter wavelengths, the electrons end up bobbing up and down at a faster frequency, but don't bob around over greater distances. Is that correct? But then light is actually quantized too somehow, so that these effects on the electrons aren't actually smooth, but kind of jumpy, right? So in cases where there's few photons, the electrons might not actually do their synchronized bobbing, and could for example have one that gets accelerated up, but never gets accelerated down again because we ran out of photons. Is this correct? And also, since the bobbing generally seems smooth (is that even the case?), that must mean there tend to be many light quanta per period. As far as I understand, the amount of light quanta also doesn't depend on the frequency of the light, (but instead they just become more energetic), so that you on average you would actually have less photons per period in light that has a shorter wavelength. So theoretically on average, in more energetic light, the bobbing of electrons would be less smooth, right? Besides the electric part, there's also a magnetic part. Does that part of the wave even do anything except keep the wave going? Thanks for your help!