Why does an electron spread when passing through a single slit? I mean there is a big hole that could atom without touching it. So there is no need to bend?
Because it has properties of both a particle (so it can do things like "fit through without touching the sides") and a wave (so it undergoes things like diffraction.)
Even in wave form it shouldn't spread that big since it is too small. Like how laser doesn't touch the corner.
Most robots are simply collecting information for search engines. For instance if you type 'ISU (Infinite Spongy Universe)Model', you will be see this site as the first choice in google, that is because a bot collected that information. Some pseudoscience members get all excited about the number of views their posts get and imagine 1000s of people are reading their ideas, when in reality most of the views are just search bots.
That's not how EM waves work. There isn't just one wave that starts and stops instantly. From a wave perspective it's a continuous waveform that is a lot longer than just a single wavelength.
