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Henri Becquerel

By: Chris Niemczyk & Jake Somosky. Henri Becquerel. Personal Background. -Becquerel was born in Paris on Dec. 15, 1852. -His father and grandfather also were physicists. -Becquerel studied at the Ecole Polytechnique and graduated as an engineer from the Ecole des Ponts-et-Chaussees.

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Henri Becquerel

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  1. By: Chris Niemczyk & Jake Somosky Henri Becquerel

  2. Personal Background • -Becquerel was born in Paris on Dec. 15, 1852. • -His father and grandfather also were physicists. • -Becquerel studied at the Ecole Polytechnique and graduated as an engineer from the Ecole des Ponts-et-Chaussees. • -In 1892, he became professor of physics at the Museum of Natural History, and in 1895 took the same position at the Ecole Polytechnique. • -He was elected president of the French Academy of Sciences in 1908. Becquerel died on Aug. 25, 1908. • -The Becquerel, a unit of radioactivity, is named for him.

  3. Scientific Research & Interests • -Some of Henri Becquerel earliest work was concern with the plane polarization of light, with the phenomenon of phosphorescence, as well as with the absorption of light by crystals. • -He discovered spontaneous radioactivity and radioactivity through his investigations of uranium and other substances. • -Finally he discovered the phenomenon of natural radioactivity. He won the Nobel Prize for physics in 1903. • -He published his finding in many papers mainly the Annales de Physique et de Chime.

  4. Radioactivty Radioactivity was an accidental discovery when he was investigating phosphorescence Radioactivity demonstrated that the atom was neither invisible nor immutable Becquerel work led to a pivotal redefinition of the nature of the atom and helped introduce the revolutionary era of atomic physics

  5. Major Contributions • -He discovered natural radiation with Pierre and Marie Curie. • -He was Marie Curies mentor and teacher.

  6. Affects of the Discoveries • -In 1896, Becquerel found out that rays coming from uranium affected a photographic plate in the same way as X rays. • -“The methods at our disposal are unable to bring about (but which) could certainly release energy in sufficiently large quantities to produce the observed effects, without the changes in matter being large enough to be detectable by our methods of investigation.” – Henri Becquerel

  7. Uranium • Becquerel developed the photographic plates expecting only faint images to appear but the images were clear and strong • Proved that uranium emitted radiation without and external source such as the sun

  8. Legacy • Becquerel’s work led to more detailed understanding of the structure of matter and its relationship to energy • Pioneer in the new world of subatomic phenomena • Introduced the revolutionary era of atomic physics • Affected modern medical science

  9. Bibliography • MLA style: "Henri Becquerel - Biography". Nobelprize.org. 15 Oct 2010 http://nobelprize.org/nobel_prizes/physics/laureates/1903/becquerel-bio.html • Henri Becquerel Biography. October 14, 2010.http://www.biography.com/articles/Henri-Becquerel-40055 • Henri Becquerel Biography. October 14,2010.http://becquerel.kegli.net/Becquerel.htm • Jaki, Stanley L. "Becquerel, Antoine Henri (1852-1908)." Encyclopedia of World Biography. Ed. Suzanne M. Bourgoin. 2nd ed. Detroit: Gale Research, 1998. 17 contentSet=GBRC&type=retrieve&tabID=T001&prodId=DC&docId=EK1631000527&source=gale&srcprod=DISC&userGroupName=22512&version=1.0>.

  10. Bibliography • http://images.photos.com/thw/thw14/PH/OLA/36967821.thw.jpg?0460000130 vols.Discovering Collection. Gale. Welles-Turner Memorial Library. 14 Oct. 2010 <http://find.galegroup.com/srcx/infomark.do?& • Vondrand, Prazska Potytechnika. October 14, 2010http://www.cvut.cz/fotobanka/historie/polytechnika.jpg • http://www.spaceandmotion.com/Images/science/marie-pierre-curie.jpg • http://www.nmm.ac.uk/collections/images/560/L/05/L0501-001.jpg • Olson, Richard G. "Becquerel, Antoine Henri." World Book Student. World Book, 2010. Web. 15 Oct. 2010. • National Maritime Museum. Dip Circle. October 14, 2010. http://www.microscopyu.com/articles/polarized/images/polarizedlightfigure1.jpg • New World Encyclopedia. April 2nd 2008 http://www.newworldencyclopedia.org/entry/Henri_Becquerel

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