Discoveries/Contributions
J.J. Thomson did many things as a physicist. He discovered electrons in 1897 and isotopes, and the mass spectrometer. He also wrote 13 books about physics and discovered a way to separate different kinds of atoms and molecules by using positive rays. He discovered this in 1904 and was awarded the Nobel Prize for physics in 1906.Thomson won the prize for his great merits for his experiment and theoretical investigations on the conduction of electricity by gases. He was also awarded the Addams Prize in 1884. He won that by writing the book "Treatise on the Motion of the Vortex Rings" in 1884. Overall he won the Copley Metal for his outstanding achievements in science. Above you see a picture of one model, Cathode Ray, that J.J. Thomson created. This tube was created to pass electricity from one side to the other. It is like wires today.