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positron

[ poz-i-tron ]

noun

, Physics.
  1. an elementary particle having the same mass and spin as an electron but having a positive charge equal in magnitude to that of the electron's negative charge; the antiparticle of the electron.


positron

/ ˈpɒzɪˌtrɒn /

noun

  1. physics the antiparticle of the electron, having the same mass but an equal and opposite charge. It is produced in certain decay processes and in pair production, annihilation occurring when it collides with an electron
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


positron

/ pŏzĭ-trŏn′ /

  1. The antiparticle that corresponds to an electron.
  2. Also called antielectron


positron

  1. The antiparticle for an electron ; it has the same mass as an electron, but carries a positive charge .


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Notes

Positrons are found in collisions initiated by cosmic rays .
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Word History and Origins

Origin of positron1

First recorded in 1930–35; posi(tive) + (elec)tron
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Word History and Origins

Origin of positron1

C20: from posi ( tive + elec ) tron
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Example Sentences

Even humble bananas emit positrons, the electron’s antimatter counterpart.

Where electrons have negative electric charge, positrons have positive charge.

The neutron and positron were both found in laboratories that are small in comparison with today’s, and each discovery was attributed to a single physicist, relatively soon after the particles had been proposed.

In the 1930s, antimatter was such a leap that Dirac’s hesitation to propose the positron was understandable.

Physicists also resisted the positron, until it became difficult to ignore.

The uncertainty in the positron counts are huge at the high energy end of the AMS-02 results.

In fact, the data seem to show positron counts leveling off at high energy, but things are still pretty messy.

When the gamma rays enter the sleeve, they interact with that photon gas, annihilating into electron-positron pairs.

Another highly regarded method was PET, or positron emission tomography.

These units are the positron, the negatron, and the neutron.

The design of the electron brain had completely ignored the polarity of the positron.

As I am the only scholar in my field—the polarity of the positron—I have never been asked for information.

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positivitypositron emission tomography