Question #1

1. 1803 - John Dalton
2. 1830 - Michael Faraday
3. 1869 - Johannes Hittorf
4. 1879 - William Crookes
5. 1897 - J.J. Thompson
6. 1895 - William Conrad Roentgen
7. 1899 - Ernst Rutherford
8. 1908-1917 - Robert Millikan

1. John Dalton – Atomic Theory
2. Michael Faraday - Cathode – positive side. Anode – negative side
3. Johannes Hittorf - a shadow of an object was cast on the end of the tube toward the cathode.
4. William Crookes - Developed a better vacuum pump with a smaller gas pressure.
5. J.J. Thompson - Found that cathode rays could be deflected by an electric field.
6. William Conrad Roentgen - Found that x-rays could go through solid objects using cathode tubes.
7. Ernst Rutherford - Studied absorption of radioactivity.
8. Robert Millikan – Oil-drop experiment.