Physics. the simultaneous creation of a particle and its antiparticle by a nucleus or particle in an excited state, as when a photon is absorbed.
the production of an electron and a positron from a gamma-ray photon in a strong field as that passes close to an atomic nucleus
The simultaneous creation of a subatomic particle and its antiparticle from some other particle or a field fluctuation. A high-energy gamma ray photon, for example, can spontaneously create an electron-positron pair in a strong electric field. Pair production is essential to theories of particle physics; pair production from gamma rays is used to detect such rays in pair production telescopes, since electrons and positrons are easily detected.
noun 1. Cribbage. a set of three cards of the same denomination, worth six points. noun 1. (in some card games) a set of three cards of the same denomination
[pair] /pɛər/ noun, plural pairs, pair. 1. two identical, similar, or corresponding things that are matched for use together: a pair of gloves; a pair of earrings. 2. something consisting of or regarded as having two parts or pieces joined together: a pair of scissors; a pair of slacks. 3. two individuals who are similar […]
noun 1. a form of competitive skating in which a man and a woman skate together in performing a choreographed series of jumps, lifts, and other acrobatic moves to a selection of music.
- Pair trawling
noun 1. the act or practice of using two boats to trawl for fish