Becquerel(redirected from Petabecquerel)
Also found in: Thesaurus, Medical, Encyclopedia.
Family of French physicists, including Antoine César (1788-1878), a pioneer in electrochemistry; his son Alexandre Edmond (1820-1891), noted for his research on phosphorescence and spectroscopy; and his grandson Antoine Henri (1852-1908), who shared a 1903 Nobel Prize for his discovery of the radioactive properties of uranium.
n. Abbr. Bq
The International System unit of radioactivity, equal to one nuclear decay or other nuclear transformation per second.
[After Antoine Henri Becquerel.]
(Biography) 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
(Units) the derived SI unit of radioactivity equal to one disintegration per second. Symbol: Bq
[C20: named after Antoine Henri Becquerel]
1. Alexandre Edmond, 1820–91, French physicist (son of Antoine César).
2. Antoine César, 1788–1878, French physicist.
3. Antoine Henri, 1852–1908, French physicist (son of Alexandre Edmond).
A unit used to measure the rate of radioactive decay. Radioactive decay is measured by the rate at which the atoms making up a radioactive substance are transformed into different atoms. One becquerel is equal to one of these atomic transformations per second.
Family of French physicists, including Antoine César (1788-1878), one of the first investigators of electrochemistry; his son Alexandre Edmond (1820-1891), noted for his research on phosphorescence; and his grandson Antoine Henri (1852-1908), who discovered spontaneous radioactivity in uranium.