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of an 1895 experiment by Jean Perrin, Thomson built a cathode ray tube ending in a pair of metal cylinders with a slit in them. These cylinders were in turn connected to an electrometer, a device for catching and measuring electrical charge.
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www.aip.org/history/electron/jj1897.htm
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When physicists moved a magnet near the glass, they found they could push the rays about. But when the German physicist Heinrich Hertz passed the rays through an electric field created by metal plates inside a cathode ray tube, the rays were not deflected in the way that would be expected of electrically charged particles.
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www.aip.org/history/electron/jjrays.htm
www.aip.org/history/electron/jjrays.htm
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Cathode ray tube - Wikipedia, the free encyclopedia
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The cathode ray tube ( CRT ) is a vacuum tube containing an electron gun (a source of electrons) and a fluorescent screen, with internal or external means to accelerate and deflect the electron be...
en.wikipedia.org/wiki/Cathode_ray_tube
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J. J. Thomson - Wikipedia, the free encyclopedia
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Sir Joseph John “J. J.” Thomson , OM, FRS (18 December 1856 – 30 August 1940) was a British physicist and Nobel laureate, credited for the discovery of the electron and of isotopes, and the invention...
en.wikipedia.org/wiki/J._J._Thomson
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Scientists had discovered as early as the 1850's that when a magnet was held up next to the cathode ray tube, the beam would be deflected. This result can be seen in the following video.
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dev.physicslab.org/Document.aspx?doctype=3&filename=Mag...
dev.physicslab.org/Document.aspx?doctype=3&filename=Magnetism_CathodeRays.xml
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Cathode ray tube experiment set, including magnetic effect CRT (SS2453), 10mm induction coil, magnet wand, 2 banana plug wires, 2 alligator clip wires, ...
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www.sci-supply.com/closeup.asp?cid=178&pid=248&offset=1
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German Karl Ferdinand Braun invented the cathode ray tube oscilloscope in 1897 - Electronic television is based on the development of the cathode ray tube which is the picture tube found in modern television sets. ... Television History - Cathode Ray Tube...
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inventors.about.com/library/inventors/blcathoderaytube....
inventors.about.com/library/inventors/blcathoderaytube.htm
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This interactive Java tutorial explores how visible ionizing radiation is created in a cathode ray tube from the flow of electrons through the gas in the tube. ... Crookes Tube: Cathode Rays...
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micro.magnet.fsu.edu/electromag/java/crookestube/
micro.magnet.fsu.edu/electromag/java/crookestube/
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chemmovies.unl.edu/ChemAnime/CATHRAYD/CATHRAYD.html
chemmovies.unl.edu/ChemAnime/CATHRAYD/CATHRAYD.html
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