[DOC] [TLE] Positron - Wikipedia [PAR] The positron or antielectron is the antiparticle or the antimatter counterpart of the 
electron. ... The paper did not explicitly predict a new particle but did allow for 
electrons ... of an as-yet-unobserved particle that he called an "anti-electron" that 
would have ... The positron had also been contemporaneously discovered by 
Patrick... [DOC] [TLE] Antimatter - Wikipedia [PAR] In particle physics, antimatter is a material composed of antiparticles, which have 
the same ... For example, a positron (the antiparticle of the electron) and an 
antiproton (the ... as well as anti-atoms corresponding to the known chemical 
elements. .... also called baryon asymmetry, is attributed to CP-violation: a 
violation of the... [DOC] [TLE] Antimatter - The Big Bang and the Big Crunch - The Physics of the ... [PAR] This antimatter, then, is the mirror image of matter, and the antiparticles of which 
it ... also predicted that, if enough energy could be concentrated, an antielectron 
... the appearance of this hypothetical antielectron (which he called the positron), 
... huge energy required to produce the matter-antimatter pairs in the first place. [DOC] [TLE] positron | subatomic particle | Britannica.com [PAR] Alternative Titles: anti-electron, antielectron, positive electron ... Positron, also 
called positive electron, positively charged subatomic particle having the same ... 
The first of the antiparticles to be detected, positrons were discovered by Carl 
David ... an explanation for a theoretical aspect of electrons predicted by P.A.M. 
Dirac. [DOC] [TLE] What is Antimatter? - Live Science [PAR] Jun 20, 2014 ... To better understand antimatter, one needs to know more about matter. ... Anti-
electrons (called positrons) behave like electrons but have a positive charge. ... 
These antimatter particles (which are called "antiparticles") have been ... 
Antimatter was first predicted in 1928 by English physicist Paul Dirac, who... [DOC] [TLE] What is positron? - Definition from WhatIs.com [PAR] The existence of the positron was predicted in 1928 by physicist Paul Dirac, and 
positrons ... Positrons are important in a medical technology called positron 
emission ... have antiparticles as well, known as the anti-proton and the anti-
neutron, with ... People Who Read This Also Read. ... Be the first to tell us what 
you think. [DOC] [TLE] antiparticle - Infoplease [PAR] The existence of antiparticles for electrons was predicted in 1928 by P. A. M. 
Dirac's ... cosmic rays, discovered the predicted positron, the first known 
antiparticle. [DOC] [TLE] Antiparticle | Article about antiparticle by The Free Dictionary [PAR] For example, the collision between an electron and its antiparticle, a positron, 
results in the ... The existence of antiparticles for electrons was predicted in 1928 
by P. A. M. DiracDirac, Paul Adrien Maurice .... You can also log in with ... This 
first recorded particle is a meson composed of an anti-beauty quark - the beauty... [DOC] [TLE] Paul Dirac - Discoverer of Antimatter - Awesome Stories [PAR] Paul Adrien Maurice Dirac (1902-1984), a British physicist known as a man of 
few ... known as a man of few words, developed a stunning equation in 1928. ... 
By correctly predicting the existence of these antiparticles, now called positrons, 
Dirac ... Anderson called the anti-electron a "positron," because of its positive 
charge. [DOC] [TLE] What is antimatter?| Explore | physics.org [PAR] The existence of antimatter was first predicted by Paul Dirac in papers published 
from 1928 ... charge and quantum spin  although some are their own antiparticle
. ... nor destroyed, but we now know that energy and mass are interchangeable. 
... 511 keV is a signature of an electron and a positron annihilating one another. [DOC] [TLE] What is antimatter? - Scientific American [PAR] Oct 18, 1999 ... This particle, which is called the positron, is the antiparticle of the electron, and it 
... soon confirmed the remarkable prediction of antimatter in Dirac's theory. ... that 
antimatter and matter were equally common in the earliest stagesso why ... which 
also has the opposite sign in the corresponding

Question: Predicted in 1928, the first known antiparticle was the anti-this, also called the positron
Answer: the antielectron