Simple chemistry questions -- creating particle beams... I'm new to chemistry and trying to understand this page http://www.chemguide.co.uk/atoms/properties/. I'm about to ask some very silly questions :uhh: It shows two examples of what will happen if a beam of protons, neutrons and electrons are passed between two electrically charged plates. 1. If the particles have the same energy. 2. If the particles have the same speeds. My first question is, how can you create a beam of these particles in the first place? I thought only photons and radiation were beams. Was it just hypothetical?