1. J.J Thomson By: Jazzy, Anthony and Katya

2. J.J Thomson Also known as, Joseph John Thomson A Famous British physicist Born 18 th of December 1856 in Cheetham Hill Manchester in England Died 30 th of August 1940, buried at Westminster Abbey

3. Life He went to University of Manchester in 1870, then later on moved on to Trinity College, Cambridge in 1876 He became the Cavendish Professor of Physics in 1884 Got married to Rose Elisabeth Paget in 1890 They had one daughter, Joan Paget Thomson, and one son, George Paget Thomson George won the Nobel prize in 1937

4. Accomplishments A Nobel laureate for the discovery of the electron and isotopes and for his invention, the mass spectrometer. Awarded the 1906 Nobel prize in physics for his discoveries done on conduction of electricity in gases Thomson enjoyed experimenting with cathode rays and cathode ray tubes It led him to the discovery of electrons and subatomic particles He used the cathode ray tubes in 3 different experiments

5. First Experiment Attempted to figure out if the negative charge could or couldn’t be separated from cathode rays by means of magnetism The negative charge couldn't be separated from the cathode rays

6. Thomson’s second experiment Tried to figure out if the rays could or couldn’t be deflected by an electric field Tried this multiple times but all failed Failure because they contained trace amounts of gas

7. Thomson’s third experiment He measured the mass-to-charge ratio of the cathode rays Either particles were very light or very highly charged

8. Resources http://en.wikipedia.org/wiki/J._J._Thomson http://nobelprize.org/nobel_prizes/physics/laureates/1906/thomson- bio.html http://nobelprize.org/nobel_prizes/physics/laureates/1906/thomson- bio.html http://www.aip.org/history/electron/jj1897.htm