Excerpt from the Minutes of the Albany Institute (April 25, 1831)
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Excerpt from the Minutes of the Albany Institute, April 25, 1831. The minutes detail a demonstration by Joseph Henry, then a teacher at the Albany Academy and later first Secretary of the Smithsonian Institution, of an electromagnet of his own construction and a device that measured the magnetic intensity of the Earth, which was invented by Christopher Hansteen, director of the Observatory at Oslo, Norway, to help map the Earth's magnetic fields.
Historic Images of the Smithsonian
2 pages scanned from the edited transcript of the original version and notes in the Joseph Henry Papers Volume 1, pages 338-339.
Reingold, Nathan, et al, eds., The Papers of Joseph Henry, Volume 1, The Albany Years: December 1797-October 1832 (Washington: Smithsonian Institution, 1972), 338-339
Institutional History Division, Smithsonian Archives, 600 Maryland Avenue, SW, Washington, D.C. 20024-2520, SIHistory@si.edu
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SIA2012-0948 and SIA2012-0949
Number of Images: 2 ; Color: Black and White ; Size: 7w x 10h ; Type of Image: Document ; Medium: Paper