J J Thomson's Electromagnetic Tube used in the Discovery of the Electron, about 1896
Electromagnetic (e/m) cathode ray tube, by Sir Joseph John Thomson, Cambridge, England, 1896. Part of the J.J. Thomson's original e/m cathode ray tube apparatus, for measuring the velocity of the cathode rays and the ratio of the mass of the carriers to the charge carried by them.
- Measurements:
-
overall: 120 mm x 350 mm x 50 mm,
- Materials:
- glass (soda-glass) , resin (unidentified) and metal (unknown)
- Object Number:
- 1901-51/1
- type:
- electrons and cathode ray demonstration tubes