<p align="right">Last Update: <font color="#4f81bd">November 26, 2024</font></p> ## BIG IDEAS - The first confirmed particle of antimatter, providing evidence for Paul Dirac's theory of antimatter. - Discovered by Carl Anderson in 1932. - The antimatter counterpart to the electron, having the same mass as an electron but a positive electric charge. - When a positron encounters an electron, they annihilate each other. - Fundamental in medical applications such as Positron Emission Tomography (PET) scans. - Produced in high-energy processes such as cosmic ray interactions, certain types of radioactive decay, and within particle accelerators. ### Related Topics --- [[Home|Home]] | [[Particle Physics]] | [[Matter]] | [[Structure of the atom]] | [[Notes Vault/Physics Notes Vault/Particle Physics/Fundamental Forces of Nature|Fundamental Forces of Nature]] | [[Hadrons]] | [[Fermions]] | [[Leptons]] | [[Quarks]] | [[Standard Model]]