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positron
positron Particle that is identical to the electron, except that it is positively charged, making it the antiparticle of the electron. It was observed (1932) in cosmic radiation by US physicist Carl Anderson. It is also emitted from certain radioactive nuclei. Electron-positron pairs can be produced when gamma radiation interacts with matter. See also antimatter; elementary particle
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"positron." World Encyclopedia. 2005. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "positron." World Encyclopedia. 2005. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O142-positron.html "positron." World Encyclopedia. 2005. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-positron.html |
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positron
positron (poz-i-tron) n. an electrically charged particle, released in some radioactive decays, that has the same mass as an electron but opposite charge. It has a very short lifetime as it quickly reacts with an electron to produce gamma rays.
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"positron." A Dictionary of Nursing. 2008. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "positron." A Dictionary of Nursing. 2008. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O62-positron.html "positron." A Dictionary of Nursing. 2008. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-positron.html |
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positron
pos·i·tron / ˈpäzəˌträn/ • n. Physics a subatomic particle with the same mass as an electron and a numerically equal but positive charge. |
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"positron." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "positron." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O999-positron.html "positron." The Oxford Pocket Dictionary of Current English. 2009. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-positron.html |
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positron
positron see antiparticle . |
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"positron." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "positron." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1E1-X-positron.html "positron." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-X-positron.html |
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positron
positron •Agamemnon, Memnon
•ninon, xenon
•noumenon • Trianon • xoanon
•organon • Simenon • Maintenon
•crampon, kampong, tampon
•Nippon • coupon
•Akron, Dacron, macron
•electron • natron • Hebron • positron
•Heilbronn • micron
•boron, moron, oxymoron
•neutron • interferon
•fleuron, Huron, neuron
•Oberon • mellotron • aileron
•cyclotron • Percheron • Mitterrand
•vigneron • croissant • Maupassant
•garçon • Cartier-Bresson • exon
•frisson • Oxon • chanson • Tucson
•soupçon • Aubusson • Besançon
•penchant • torchon • cabochon
•Anton, canton, Danton
•lepton
•piton, Teton
•krypton • feuilleton • magneton
•chiton
•photon, proton
•croûton, futon
•eschaton • peloton • contretemps
•telethon
•talkathon, walkathon
•Avon • tableau vivant • vol-au-vent
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Cite this article
"positron." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "positron." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O233-positron.html "positron." Oxford Dictionary of Rhymes. 2007. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-positron.html |
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