Unveiling the electron with oil drops

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Detailed presentation of the historic oil-drop experiment conducted by Robert Millikan and Harvey Fletcher, which determined the electric charge of the electron and established the electron as the first subatomic particle.


Videos:
The Birth of Quantum Mechanics    • The Birth of Quantum Physics  
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Playlist: Quantum Mechanics    • Quantum Mechanics  


References:

∘ J.J. Thomson, Cathode Rays, Phil. Mag. 44, 293 (1897) books.google.de/books?id=orp_EP-lkzoC&pg=PA293
∘ R.A. Millikan, The Isolation of an Ion, a Measurement of Its Charge, and the Correction of Stokes's Law, Phys. Rev. 32, 349 (1911) journals.aps.org/pri/abstract/10.1103/PhysRevSerie…
∘ R.A. Millikan, On the Elementary Electrical Charge and the Avogadro Constant, Phys. Rev. 2, 109 (1913) journals.aps.org/pr/abstract/10.1103/PhysRev.2.109
∘ H. Fletcher, My work with Millikan on the oil‐drop experiment, Physics Today 35 (6), 43 (1982) doi.org/10.1063/1.2915126


Credits:

J. J. Thomson with his cathode-ray tube by pixel17.com under CC BY-SA 2.0 Deed creativecommons.org/licenses/by-sa/2.0/deed.en
Crookes tube by D-Kuru under CC BY-SA 3.0 AT Deed creativecommons.org/licenses/by-sa/3.0/at/deed.en
Cathode rays deflected in a magnetic field by M. Białek under CC BY-SA 4.0 Deed creativecommons.org/licenses/by-sa/4.0/
Robert Millikan, public domain
Albert Michelson, public domain
Michelson interferometer, public domain
Ryerson Physical Lab at UChicago, public domain
Erich Regener by Regener family under CC BY 3.0 Deed creativecommons.org/licenses/by/3.0/deed.en
Wilson cloud chamber by Caltech, The Mechanical Universe    • Episode 12: The Millikan Experiment - The ...  
Harvey Fletcher, public domain
Magic Lantern by A. Niemimäki under CC BY-SA 2.0 Deed creativecommons.org/licenses/by-sa/2.0/deed.en
Pocket watch by F. van Duns under CC BY-SA 4.0 Deed creativecommons.org/licenses/by-sa/4.0/deed.en
Vintage atomizer perfume by A. Andriot & Vetiver Aromatics (vetiveraromatics.com/) under CC BY-SA 3.0 Deed creativecommons.org/licenses/by-sa/3.0/deed.en
Mist spray by K. Grabowska in Pexels www.pexels.com/video/a-person-spraying-a-room-mist…
Harvey Fletcher, public domain
Oil-drop apparatus, public domain
Fletcher-Millikan's setup for the oil drop experiment, public domain
Bell Telephone Laboratories, Murray Hill NJ, public domain
Harvey Fletcher by Karden-Kazanjian, Bell Telephone Laboratories Publication Department, courtesy AIP Emilio Segrè Visual Archives
Fletcher conducts a hearing test on school children (1928), Bell Laboratories / Alcatel-Lucent USA Inc., courtesy AIP Emilio Segrè Visual Archives, Lillian Hoddeson Collection
Technical Grammy adapted from A. Blumlein under CC BY-SA 4.0 Deed