antiparticle
/an-tee-pahr-ti-kuhl, an-tahy-/US // ˈæn tiˌpɑr tɪ kəl, ˈæn taɪ- //UK // (ˈæntɪˌpɑːtɪkəl) //
反粒子,反颗粒,反微粒,反颗粒物
Definitions
n.名词 noun
- 1
Physics.
- : a particle all of whose properties, as mass, spin, or charge, have the same magnitude as but, where appropriate, the opposite sign of a specific elementary particle; neutral pions, photons, and gravitons are considered to be their own antiparticles: The positron is the antiparticle of the electron.Compare antimatter, annihilation.
Examples
However, until now, nobody has reliably measured the mass difference between D1 and D2 that determines how quickly the D0 oscillates into its antiparticle.
It consists of 17 particles, many of which have antiparticle partners.
Physicists would go on to discover many other antiparticles — all of which are identical to their matter partners except for an opposite electric charge — including the antiproton in 1955.
An imbalance between two types of antiparticles that seethe within the proton is even wonkier than previously thought, a new measurement indicates.
Positronium is composed of electron and its antiparticle, a positron.
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