Part one of term paper
AP Physics Period 2 In the spring of 1897 J.J. Thomson demonstrated that the beam of glowing matter in a cathode-ray tube was not made of light waves, as "the almost unanimous opinion of German physicists" held. Rather, cathode rays were negatively charged particles boiling off the negative cathode and attracted to the positive anode. These ...

Part two of term paper
... regardless of the kind of matter they were born from, it followed that they must be some basic constituent part of matter, and if they were a part, then there must be a whole. The real, physical electron implied a real, physical atom: the particulate theory of matter was therefore justified for the first time convincingly by physical experiment. They sang success at the annual Cavendish dinner. Armed with the electron, and knowing from other experiment that what was left when electrons were stri ...