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Tube used in the discovery of the electron, about 1896

Tube used in the discovery of the electron, about 1896

1896
Magnet coil, part of the apparatus for measuring the velocity of the cathode rays and the ratio of the mass of the carriers to the charge carried by them. (J.J. Thomson's original e/m cathode ray tube.)

Tube used in the discovery of the electron, about 1896

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.

J J Thomson's Electromagnetic Tube used in the Discovery of the Electron, about 1896

1896
Diagram of Thomson's method of measuring electromagnet for photo-electrons (1899)

Diagram, method of measuring electromagnet for photo-electrons

1899