Henry, Joseph, 1797–1878, American physicist, b. Albany, N.Y., educated at Albany Academy. He taught (1826–32) mathematics and natural philosophy at Albany Academy and was professor of natural philosophy (1832–46) at Princeton (then the College of New Jersey). From 1846 he served as the first secretary and director of the newly founded Smithsonian Institution; he introduced and developed many of its activities and established its general policies. Before assuming his responsibilities at the Smithsonian, he had made notable contributions to the physical sciences, especially in electromagnetism. Henry improved the electromagnet, increasing its strength and fitting it for practical use. He invented and operated the first electromagnetic telegraph, which formed the basis for the commercial telegraphic system. He discovered self-inductance, and the unit of inductance inductance, quantity that measures the electromagnetic induction of an electric circuit component; it is a property of the component itself rather than of the circuit as a whole.
..... Click the link for more information. is often called the henry in his honor. Independently of Michael Faraday Faraday, Michael , 1791–1867, English scientist. The son of a blacksmith, he was apprenticed to a bookbinder at the age of 14. He had little formal education, but acquired a store of scientific knowledge through reading and by attending educational lectures
..... Click the link for more information. , he discovered the principle of the induced current, basic to the dynamo, transformer, and many other devices. Henry invented a small electromagnetic motor, and extended the work on induced currents to show that an induced current can be used to induce another current in a nearby circuit and that resulting currents in turn can induce others. His numerous other contributions include the institution of the weather report system.

Bibliography

See his Papers, ed. by N. Reingold et al. (15 vol., 1972–); biographies by S. R. Riedman (1961) and A. E. Moyer (1997).

Henry, Joseph

(born Dec. 17, 1797, Albany, N.Y., U.S.—died May 13, 1878, Washington, D.C.) U.S. physicist. He aided Samuel F.B. Morse in developing the telegraph. He discovered several important principles of electricity, including self-induction. He observed electromagnetic induction a year before Michael Faraday announced its discovery. He made improvements to electromagnets, discovered the laws on which the transformer is based, investigated electric discharge, and demonstrated that sunspots radiate less heat than the general solar surface. In 1846 he became the first secretary and director of the Smithsonian Institution, where he organized a corps of volunteer weather observers that led to creation of the U.S. Weather Bureau. He was a chief technical adviser to Abraham Lincoln during the Civil War and a primary organizer of the National Academy of Science. In 1893 the standard unit of electrical inductance, the henry, was named in his honour.

Henry, Joseph (1797–1898) physicist; born in Albany, N.Y. He worked as a tutor, then as a surveyor (1825–26) before becoming a professor at his alma mater, Albany Academy (1826–32). He began research on electromagnetism (1827), constructed the first electromagnetic motor (1829), and discovered electrical induction independent of English physicist Michael Faraday. The "henry" unit of inductance is named after him. He continued his research after transferring to Princeton (1832–46), demonstrating the oscillatory nature of electrical discharges (1842), and diversifying into the fields of astronomy, galvanometry, and telegraphy. In 1846 he was named first secretary and director of the Smithsonian Institution; through his leadership (1846–77), the Smithsonian supported internationally cooperative scientific research. While administrative duties left him little time for the "pure" scientific endeavors he favored, Henry introduced a system of weather forecasting, investigated the propagation of light and sound waves by lighthouses, and encouraged the museum's patronage of anthropology and ethnology.

Henry, Joseph

Born Dec. 17, 1797, in Albany, N. Y.; died May 13, 1878, in Washington, D. C. American physicist.

In 1832, Henry was appointed a professor at the College of New Jersey (now Princeton University). From 1846 he served as secretary and director of the Smithsonian Institution. In 1868 he was appointed president of the National Academy of Sciences, and in 1871 he became the first president of the Philosophical Society of Washington. His principal works were devoted to electrical engineering. In 1828, Henry built the first high-powered electromagnets using multilayered coils of insulated wire. He discovered the phenomenon of self-induction (1832) and the oscillatory character of the capacitor discharge (1842). The unit of inductance in the International System of Units—the henry—has been named after him. Henry also wrote works in meteorology.

WORKS

Scientific Writings, vols. 1-2, Washington, 1886.

REFERENCE

Lebedev, V. I. “Izobretenie Dzhozefa Genri.” Vestnik sviazi, 1946, no. 8.

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No references found			He was pre-deceased by six brothers and three sisters, Frank, Henry, Joseph, Al, and Louis, Louise Bellizzi, Christine Swenson, and Irene Borowy. Robert R. Buffone, 78 by Telegram & Gazette (Worcester, MA) He's making giant strides and I'm glad we have played a small part in him getting his skills back, along with Debbie and his children Henry, Joseph and Jasmine. Sprake boosted by riding out at Tregoning's yard by The Racing Post (London, England) Five brothers, Frank, Henry, Joseph, Al and Louis Buffone, as well as three sisters, Louise Bellizzi, Christine Swenson and Irene Borowy all predeceased him. Dominic J. Buffone, 93 by Telegram & Gazette (Worcester, MA)			Henry Stephens Washington Henry Street Settlement Henry Sweet Henry the Fowler Henry the Lion Henry the Minstrel Henry the Navigator Henry the Proud Henry Thomas Buckle Henry V Henry VI Henry VII Henry VIII Henry W. Coe State Park Henry Wadsworth Longfellow Henry Wilhelm Kristiansen Henry Winston Henry's Law Henry, Alexander Henry, Andrew Henry, Cape Henry, Edward Henry, Fort Henry, Frederic Henry, John Henry, Joseph Henry, O Henry, O. Henry, Patrick Henryk Dembinski Henryk Jablonski Henryk Kamienski Henryk Lowmianski Henryk Rzewuski Henryk Siemiradzki Henryk Sienkiewicz Henryk Walecki Henryk Wieniawski Henrys Lake State Park Henryson Henryson, Robert HENSA Henschel, Sir George Henschke, Alfred Hensel, Witold Henselmann, Hermann Henselt, Adolf von Hensen's node Henslow, John Stevens Henslowe Henslowe, Philip			Henry White Henry Wieniawski Henry Wilhelm Kristiansen Henry Wilson Henry Wilson Memorial School Henry Winston Henry Wise Wood Henry Wood Henry Wood (conductor) Henry Wood Promenade Concerts Henry X, Duke of Bavaria Henry XII, Duke of Bavaria Henry XII, Duke of Bavaria Henry's law Henry's law Henry's law Henry's law Henry's Law constant Henry's Law constant Henry's Law constant Henry, Alexander Henry, Andrew Henry, Cape Henry, Duke of Viseu Henry, Duke of Viseu Henry, Edward Henry, Fort Henry, Frederic Henry, John Henry, John Henry, Joseph Henry, O Henry, O. Henry, O. Henry, Patrick Henry, Patrick Henry, Patrick Henry, Prince of Reuss Henry, the Navigator Henry, the Navigator Henryetta Animal Aid Rescue Team Henryetta High School Henryk Adam Aleksander Pius Sienkiewicz Henryk Dembinski Henryk Goldszmit Henryk Górecki Henryk Jablonski Henryk Kamienski Henryk Lowmianski Henryk Rzewuski Henryk Siemiradzki Henryk Sienkiewicz Henryk Sienkiewicz Henryk Walecki Henryk Wieniawski henrys henrys henrys Henrys Fork near Ashton Henrys Lake State Park Henryson