joseph henry was the first to construct electro-magnets in a useful form.
Among the physicists of the country, joseph henry takes a high place.
In the same year he started his stimulating friendship with joseph henry Green, philosopher and surgeon.
joseph henry, who had encouraged Bell in Washington, picked it up.
It was our own joseph henry who, in 1842, discovered the electric wave—the "induction" upon which wireless telegraphy depends.
An American by the name of joseph henry discovered the remedy for this condition.
Prof. joseph henry's important discoveries were also well known.
Sir joseph henry Gilbert's outlook on plants was entirely different from that of any of the foregoing.
May found them near Cape joseph henry, not far from the spot where he had before brought succour to my party.
The floes off Cape joseph henry, although actually smaller than most of those we have crossed, were far more heavy.
masc. proper name, from French Henri, from Late Latin Henricus, from German Heinrich, from Old High German Heimerich, literally "the ruler of the house," from heim "home" + rihhi "ruler." One of the most popular Norman names after the Conquest.
henry hen·ry (hěn'rē)
n. pl. hen·rys or hen·ries (-rēz)
The unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second.
|Henry, Joseph 1797-1878. |
American physicist who studied electromagnetic phenomena. He discovered electrical induction independently of Michael Faraday, and constructed a small electromagnetic motor in 1829. He also developed a system of weather forecasting based on meteorological observations. The henry unit of inductance is named for him.