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Digital Collections

Scientific apparatus and instruments, Electronics

Students' Potentiometer

  • 1950s

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BY 4.0

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Potentiometers are used to measure electromotive force (emf) by balancing it with a known emf. The concept was first developed in 1841 by J. C. Poggendorff and improved throughout the 19th century by Latimer Clark and J. A. Fleming.

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  • 6.25 in. H x 13.25 in. W x 8 in. D (With lid closed)
Inscription
  • (Instrument panel) "SOLD BY / ARTHUR H. THOMAS CO. / PHILA. U.S.A. / MADE BY / LEEDS & NORTHRUP CO. / PHILADELPHIA / 142583 / MADE IN U.S.A"
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  • Courtesy of Science History Institute

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Science History Institute. Students' Potentiometer. Photograph, 2017. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/d217qp79j.

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BY 4.0

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The Science History Institute recognizes there are materials in our collections that may be offensive or harmful, containing racist, sexist, Eurocentric, ableist, or homophobic language or depictions. The history of science is not exempt from beliefs or practices harmful to traditionally marginalized groups. The Institute is engaged in ongoing efforts to responsibly present and address the evidence of oppression and injustice inextricable from the history of science. If you would like to learn more about our ongoing efforts or if you encounter harmful, inaccurate, or insufficient descriptions, please contact us at digital@sciencehistory.org.