British Dictionary definitions for Becquerel (1 of 2)
/ (ˌbɛkəˈrɛl) /
the derived SI unit of radioactivity equal to one disintegration per secondSymbol: Bq
Word Origin for becquerel
C20: named after Antoine Henri Becquerel
British Dictionary definitions for Becquerel (2 of 2)
/ (Frenchbɛkrɛl) /
Antoine Henri (ɑ̃twan ɑ̃ri). 1852–1908, French physicist, who discovered the photographic action of the rays emitted by uranium salts and so instigated the study of radioactivity: Nobel prize for physics 1903
The SI derived unit used to measure the rate of radioactive decay. When the nucleus of an atom emits nucleons (protons and/or neutrons) and is thereby transformed into a different nucleus, decay has occurred. A decay rate of one becquerel for a given quantity means there is one such atomic transformation per second.
Scientific definitions for Becquerel (2 of 2)
Family of French physicists, including Antoine César (1788-1878), one of the founders of the science of electrochemistry; his son Alexandre Edmond (1820-1891), noted for his research on phosphorescence, magnetism, electricity, and optics; and his grandson Antoine Henri (1852-1908), who discovered spontaneous radioactivity in uranium. Antoine Henri Becquerel's work led to the discovery of radium by Marie and Pierre Curie, with whom he shared the 1903 Nobel Prize for physics.