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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

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

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. . Encyclopedia.com. 23 Jul. 2017 <http://www.encyclopedia.com>.

"positron." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (July 23, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/positron-0

"positron." The Oxford Pocket Dictionary of Current English. . Retrieved July 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/positron-0

positron

positron: see antiparticle.

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"positron." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 23 Jul. 2017 <http://www.encyclopedia.com>.

"positron." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (July 23, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/positron

"positron." The Columbia Encyclopedia, 6th ed.. . Retrieved July 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/positron

positron

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"positron." Oxford Dictionary of Rhymes. . Encyclopedia.com. 23 Jul. 2017 <http://www.encyclopedia.com>.

"positron." Oxford Dictionary of Rhymes. . Encyclopedia.com. (July 23, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/positron

"positron." Oxford Dictionary of Rhymes. . Retrieved July 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/positron