Elementary Charge

February 21, 2021

008 – Elementary Charge

In this video Paul Andersen explains how electric charge is quantized and how the smallest unit of charge is 1.6×10^-19 C, or the elementary charge. Robert Millikan discovered the elementary charge using the oil drop experiment. Electrons have a negative elementary charge and protons have a positive elementary charge.

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Music Attribution
Title: String Theory
Artist: Herman Jolly

All of the images are licensed under creative commons and public domain licensing:
“Atom.” Wikipedia, the Free Encyclopedia, May 8, 2014. http://en.wikipedia.org/w/index.php?title=Atom&oldid=607300203.
Dilmen, Nevit. SVG Files, 2009. Own work. http://commons.wikimedia.org/wiki/File:Howtodraw-cartoon-astranaut_nevit_081.svg.
“File:Millikan’s Oil-Drop Apparatus 1.jpg.” Wikipedia, the Free Encyclopedia. Accessed May 10, 2014. http://en.wikipedia.org/wiki/File:Millikan%E2%80%99s_oil-drop_apparatus_1.jpg.
“File:Quark Structure Proton.svg.” Wikipedia, the Free Encyclopedia. Accessed May 10, 2014. http://en.wikipedia.org/wiki/File:Quark_structure_proton.svg.
“File:Robert Andrews Millikan.jpg.” Wikipedia, the Free Encyclopedia. Accessed May 10, 2014. http://en.wikipedia.org/wiki/File:Robert_Andrews_Millikan.jpg.
Gregors, Simplified_scheme_of_Millikan’s_oil-drop_experiment png: Theresa Knottderivative work: English: Simplified Scheme of Millikan’s Oil-Drop Experiment., August 13, 2004. Simplified_scheme_of_Millikan’s_oil-drop_experiment.png. http://commons.wikimedia.org/wiki/File:Simplified_scheme_of_Millikan%E2%80%99s_oil-drop_experiment.svg.
Hmilch. English: X-Ray Tube (scheme), December 23, 2008. Own work. http://commons.wikimedia.org/wiki/File:Roentgen-Roehre.svg.
NASA. English: European Space Agency Astronaut Andre Kuipers, Expedition 31 Flight Engineer, Uses a Body Mass Measurement Device (BMMD) in the Zvezda Service Module of the International Space Station., June 26, 2012. http://spaceflight.nasa.gov/gallery/images/station/crew-31/html/iss031e157943.html. http://commons.wikimedia.org/wiki/File:ISS-31_Andr%C3%A9_Kuipers_uses_a_body_mass_measurement_device.jpg.

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