|a chattering or flighty, light-headed person.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|—n , pl -ry, -ries, -rys|
|H the derived SI unit of electric inductance; the inductance of a closed circuit in which an emf of 1 volt is produced when the current varies uniformly at the rate of 1 ampere per second|
|[C19: named after Joseph Henry (1797--1878), US physicist]|
|1.||Joseph. 1797--1878, US physicist. He discovered the principle of electromagnetic induction independently of Faraday and constructed the first electromagnetic motor (1829). He also discovered self-induction and the oscillatory nature of electric discharges (1842)|
|2.||O. See O. Henry|
|3.||Patrick. 1736--99, American statesman and orator, a leading opponent of British rule during the War of American Independence|
|4.||Prince, known as Harry. born 1984, second son of Charles, Prince of Wales, and Diana, Princess of Wales|
|henry (hěn'rē) Pronunciation Key
A SI derived unit of electrical inductance, especially of transformers and inductance coils. A current changing at the rate of one ampere per second in a circuit with an inductance of one henry induces an electromotive force of one volt.
|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.
A king of England in the early sixteenth century. With the support of his Parliament, Henry established himself as head of the Christian Church in England, in place of the pope, after the pope refused to allow his marriage to Catherine of Aragon to be dissolved. Since that time, except for a few years of rule under Henry's daughter Mary I, who was a Roman Catholic, England has been officially a Protestant nation.
In his personal life, Henry was known for his corpulence and for his six wives. He divorced the first, Catherine of Aragon. He beheaded the second, Anne Boleyn, for allegedly being unfaithful to him. His third wife, Jane Seymour, died soon after giving birth to a son. He divorced his fourth wife, Anne of Cleves, and beheaded his fifth wife, Catherine Howard, also for alleged infidelity. His sixth wife, Catherine Parr, survived him. He also had his close friend and adviser Thomas More executed because More would not support Henry's declaration that he was head of the church in England. Henry was the father of King Edward VI and of Queen Elizabeth I, as well as Mary I.