noun
- a subatomic particle with the same mass as an electron but with a positive electric charge
Usage: physics
Examples
- The positron was discovered in 1932 by Carl Anderson.
- When a positron collides with an electron, they annihilate each other.
- PET scans use positrons to create detailed images of the body.
- Scientists can create positrons in particle accelerators.
- The positron is the antimatter counterpart of the electron.
- Positron emission tomography helps doctors diagnose cancer.