Positron

The positron or antielectron is the antiparticle or the antimatter counterpart of the electron. The positron has an electric charge of +1e, a spin of ½, and has the same mass as an electron. When a low-energy positron collides with a low-energy electron, annihilation occurs, resulting in the production of two or more gamma ray photons (see electr...
Found on http://en.wikipedia.org/wiki/Positron

positron

(poz´ĭ-tron) the antiparticle of the electron. When a positron is emitted by a radionuclide it combines with an electron and both undergo annihilation, producing two 511-keV gamma rays traveling in opposite directions. This effect is used in positron emission tomography.
Found on http://www.encyclo.co.uk/local/21001

positron

antielectron noun an elementary particle with positive charge; interaction of a positron and an electron results in annihilation
Found on https://www.encyclo.co.uk/local/20974

positron

(β+) Type: Term Pronunciation: poz′i-tron Definitions: 1. A subatomic particle of mass and charge equal to the electron but of opposite (positive) charge. Synonyms: positive electron
Found on http://www.medilexicon.com/medicaldictionary.php?t=71371

Positron

[video game] Positron is a video game which was published for the BBC Micro and Acorn Electron computers by Micro Power in 1983. It was developed on a pre-release Electron and was one of the few games (other than those produced by Acornsoft) available for the machine on its launch. ==Gameplay== The player controls a laser base which can mov...
Found on http://en.wikipedia.org/wiki/Positron_(video_game)

Positron

A Nuclear particle with the mass of an electron but opposite charge.
Found on http://www.chemistry-dictionary.com/definition/positron.php

Positron

A Nuclear particle with the mass of an electron but opposite charge.
Found on http://www.encyclo.co.uk/local/20728

positron

A positively charged particle that has the same mass and spin as
Found on http://science.education.nih.gov/index.html

Positron

A positron is a positively-charged particle of the same mass as the electron and with a charge equivalent but opposite in sign to that of the electron.
Found on http://www.probertencyclopaedia.com/browse/GP.HTM

positron

A subatomic particle of mass and charge equal to the electron but of opposite (i.e., positive) charge. ... Synonym: positive electron. ... (05 Mar 2000) ...
Found on http://www.encyclo.co.uk/local/20973

Positron

An Anti-electon.The positively-charged antiparticle of anelectron.
Found on http://hepwww.rl.ac.uk/public/phil/glossary.html

positron

an electron with positive charge
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=881-02-58

positron

Anderson's cloud chamber picture of cosmic radiation from 1932 showing for the first time the existence of the anti-electron that we now call the positron. In the picture a charged particle is seen entering from the bottom at high energy. It then looses some of the energy in passing through the 6 mm...
Found on http://www.daviddarling.info/encyclopedia/P/positron.html

Positron

Antiparticle of the electron.
Found on http://www2.slac.stanford.edu/vvc/glossary.html

positron

Antiparticle of the electron; an elementary particle having the same mass as an electron but exhibiting a positive charge. The positron was discovered in 1932 by US physicist Carl Anderson at the California Institute of Technology, USA, its existence having been predicted by the British physicist Paul Dirac in 1928
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0029010.html

positron

elementary particle with one positive electric charge of +e and the same rest mass as the electron
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=393-11-08

positron

elementary particle with one positive elementary electric charge and the same rest mass as the electron
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=111-14-12

positron

positively charged subatomic particle having the same mass and magnitude of charge as the electron and constituting the antiparticle of a negative ... [24 related articles]
Found on http://www.britannica.com/eb/a-z/p/99

positron

positron, antielectron 1. An elementary particle having the same mass and magnitude of charge as an electron but exhibiting a positive charge; a positive electron. 2. A positively charged particle of the same mass and magnititude of charge as an electron; a positive electron.
Found on http://www.wordinfo.info/words/index/info/view_unit/2190/3

positron

positron: see antiparticle.
Found on http://www.infoplease.com/ce6/sci/A0917692.html

Positron

See Beta Particle.
Found on http://www.encyclo.co.uk/local/20474

positron

the anti-matter partner of the electron. It is identical in all respects to an electron, but it has positive charge.
Found on http://www.encyclo.co.uk/local/21425

Positron

The antiparticle of the electron. Discovered by Anderson in 1931. See also: Antiparticle, Blackett, Patrick Maynard Stuart, Electron, Electron-Positron Annihilation.
Found on http://www.diracdelta.co.uk/science/source/p/o/positron/source.html

Positron

The positron has properties which are identical to those of a negatively charged Electron , except that it has a positive charge. Positrons are unstable in matter and disappear by Annihilation with negatively charged electrons. This produces two Gamma Rays , each of 0.511 MeV which move in opposite directions. In simple terms positron emitters (e.....
Found on http://www.ionactive.co.uk/glossary_atoz.html?s=az&t=p

Positron

The positron has properties which are identical to those of a negatively charged Electron , except that it has a positive charge. Positrons are unstable in matter and disappear by Annihilation with negatively charged electrons. This produces two Gamma Rays , each of 0.511 MeV which move in opposite directions. In simple terms positron emitters (e.g...
Found on http://www.ionactive.co.uk/glossary.html
No exact match found