1797 - 1878
Joseph Henry American Scientist
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Joseph Henry is a member of the following lists: People from Albany, New York, American physicists and People associated with electricity.
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Details
| First Name |
Joseph
|
| Last Name |
Henry
|
| Birthday |
17th December, 1797
|
| Birthplace |
Albany, New York, USA
|
| Died |
13th May, 1878
|
| Place of Death |
Washington, D.C., U.S.
|
| Zodiac Sign |
Sagittarius
|
| Nationality |
American
|
| Occupation |
Scientist
|
Joseph Henry
(December 17, 1797 – May 13, 1878) was an American scientist who served as the first Secretary of the Smithsonian Institution. He was the secretary for the National Institute for the Promotion of Science, a precursor of the Smithsonian Institution. He was highly regarded during his lifetime. While building electromagnets, Henry discovered the electromagnetic phenomenon of self-inductance. He also discovered mutual inductance independently of Michael Faraday, though Faraday was the first to make the discovery and publish his results. Henry developed the electromagnet into a practical device. He invented a precursor to the electric doorbell (specifically a bell that could be rung at a distance via an electric wire, 1831) and electric relay (1835). The SI unit of inductance, the Henry, is named in his honor. Henry's work on the electromagnetic relay was the basis of the practical electrical telegraph, invented by Samuel F. B. Morse and Sir Charles Wheatstone, separately.
