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May 9, 2024 · Joseph Henry (born December 17, 1797, Albany, New York, U.S.—died May 13, 1878, Washington, D.C.) was one of the first great American scientists after Benjamin Franklin. He aided and discovered several important principles of electricity, including self-induction, a phenomenon of primary importance in electronic circuitry.
- The Editors of Encyclopaedia Britannica
- Experimenting in Electromagnetism
- Discoveries in Electromagnetism
- The Electromagnetic Telegraph
- Electromagnetism Research
- Electromagnetic Legacy
Henry was an innovative teacher whose interest in the relatively new field of electromagnetism, combined with his belief in the importance of demonstrating scientific phenomena to his students, led him to develop electromagnets that were far more powerful than any previously made. Using these electromagnets to demonstrate both dramatic and subtle e...
In working to make more efficient use of his batteries and maximize the power of his electromagnets, Henry made basic discoveries in electromagnetism, including what specific types of electrical input should be matched to what types of circuits depending on the effects desired. These basic discoveries led him to develop both a motor and a bell-ring...
ZoomElectromagnet Made by Joseph Henry, by Unknown, 1978, Smithsonian Archives - History Div, 78-6063.The challenge in devising an electromagnetic telegraph was not to produce continuous motion, but rather mechanical action at a great distance from a battery. Prior to Henry's research, electrical signals could not be sent through long wires. Englis...
ZoomMichael Faraday, by Unknown, c. 1830s, Smithsonian Archives - History Div, SIA2012-1087 and SA-523.Henry's work with his powerful and versatile electromagnets, his motors, and telegraph circuits led him to complete important research in electromagnetism. In the years since Oersted had reported producing a magnetic effect from a battery current,...
While Joseph Henry was required to put much of his own research aside once he came to Washington, DC, in 1846, his career as a physicist had a profound impact on his leadership of the Smithsonian. Henry's top priority was to support basic research, and his dedication to this vision throughout his secretaryship brought the Institution worldwide resp...
Joseph Henry (1797-1878) became the Smithsonian's first Secretary when the Institution was founded in 1846. As its director for the next thirty-one years, Henry profoundly influenced the future of American science. In keeping with Henry's commitment to basic research, the Smithsonian provided essential institutional support for coordinating and funding research, publishing original studies ...
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The first Smithsonian Secretary, Joseph Henry, served from 1846 to 1878. A professor at the College of New Jersey, he was a physicist who conducted pioneering research in electromagnetism and helped set the Smithsonian on its course. Henry was born in 1797 in Albany, New York, to William and Ann Henry. Too poor to pay tuition, Henry did not ...
Nov 21, 2023 · Joseph realized there is a relationship between electrical currents and magnetic fields. He wondered if the relationship goes both ways. ... Joseph Henry did more than discover information about ...
Henry, Joseph (1797-1878), the leading American scientist after Benjamin Franklin until Willard Gibbs, was a professor at Princeton from 1832 to 1846. His chief scientific contributions were in the field of electromagnetism, where he discovered the phenomenon of self-inductance. The unit of inductance, called "the henry," immortalizes his name.
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Joseph Henry (December 17, 1799 – May 13, 1878) was a Scottish-American scientist whose inventions and discoveries in the fields of electromagnetism and magnetic induction helped launch the age of electrodynamics. Henry served as First Secretary of the Smithsonian Institution, which he shaped into the organization it is today.
