Antimatter
6 questions tagged Antimatter — spanning every one of the seven Ws.
When was the first antiproton discovered?
In 1955, Emilio Segrè and Owen Chamberlain discovered the antiproton at Berkeley.
When was the first positron discovered?
In 1932, Carl Anderson discovered the positron, the electron’s antiparticle.
Where is the world's largest collection of antimatter experiments based?
CERN near Geneva is the main global center for antimatter research. Experiments such as ALPHA and AEgIS study antihydrogen and the properties of antimatter.
When was the existence of antimatter first predicted?
In 1928, Paul Dirac’s relativistic equation implied the existence of particles with opposite charge. The positron was later discovered in 1932.
When was the positron discovered?
In 1932, Carl Anderson discovered the positron in cosmic-ray experiments. It was the first confirmed antimatter particle.
Where is CERN's Antimatter Factory located?
CERN’s Antimatter Factory is located in the same Geneva-area laboratory complex as the Large Hadron Collider. It is part of the site used to create, trap, and study antimatter.