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J.J. Thomson suggested that they do. He advanced the idea that cathode rays are really streams of very small pieces of atoms. ... 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,
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www.aip.org/history/electron/jj1897.htm
www.aip.org/history/electron/jj1897.htm
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ne hundred years ago, amidst glowing glass tubes and the hum of electricity, the British physicist J.J. Thomson was venturing into the interior of the atom. At the Cavendish Laboratory at Cambridge University, Thomson was experimenting with currents of electricity inside empty glass tubes. ... ; A simple cathode ray tube.
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www.aip.org/history/electron/jjhome.htm
www.aip.org/history/electron/jjhome.htm
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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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How does a cathode ray tube work? Roll the mouse over the labels see a description of that part. ... Click on the small picture to view the video. The file will open in a new browser window. ... close-up, cathode ray tube showing electron beam...
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www.chem.uiuc.edu/clcwebsite/cathode.html
www.chem.uiuc.edu/clcwebsite/cathode.html
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In 1897 the physicist Joseph John (J. J.) Thomson (1856–1940) discovered the electron in a series of experiments designed to study the nature of electric discharge in a high-vacuum cathode-ray tube—an area being investigated by numerous scientists at the time.
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www.chemheritage.org/classroom/chemach/atomic/thomson.h...
www.chemheritage.org/classroom/chemach/atomic/thomson.html
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This experiment proves that something charged with negative electricity is shot off from the cathode, ... 1) with slits in them are placed in a bulb connected with the discharge-tube; the cathode rays from the cathode A pass into the bulb through a slit in a metal plug fitted into the neck of the tube; this plug is...
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web.lemoyne.edu/~giunta/THOMSON1897.HTML
web.lemoyne.edu/~giunta/THOMSON1897.HTML
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chemmovies.unl.edu/ChemAnime/CATHRAYD/CATHRAYD.html
chemmovies.unl.edu/ChemAnime/CATHRAYD/CATHRAYD.html
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In 1897, J. ... Thomson's notion of the electron came from his work with a nineteenth century scientific curiosity: the cathode ray tube. For years scientists had known that if an electric current was passed through a vacuum tube, a stream of glowing material could be seen; ... Interpreting Rutherford's Gold Foil Experiment...
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www.visionlearning.com/library/module_viewer.php?mid=50
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J.J. Thompson first used Crooke's tub (Cathode Ray Tube) to determine that the cathode rays produced in these tubes were negative. He then calculated ... In 1909 Robert Millikan (1868-1953) later used the charge to mass ratio to determine the mass of the electron, 9.1x10^-28g. in the famous Millikan oil drop experiment.
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mset.rst2.edu/portfolios/s/segaloff_r/instrucdesign/fin...
mset.rst2.edu/portfolios/s/segaloff_r/instrucdesign/final/jjthom.htm
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