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Multi-word Results
alpha particle |
a positively charged particle given off as radiation from some fission or decay processes, consisting of two protons and two neutrons. |
beta particle |
a high-speed positron or electron ejected from a nucleus in radioactive decay or fission. |
elementary particle |
one of various subatomic particles, such as electrons, neutrinos, or quarks, from which all matter is made. |
fundamental particle |
an elementary particle. |
high-energy particle |
an atom or part of an atom having energy greater than one hundred thousand electron volts. |
particle beam |
a stream of atomic or subatomic particles projected at extremely high speed and used in research, as into nuclear reactions, or in military weaponry. |
particle board |
any of several boardlike building materials made by compressing wood chips, flakes, or sawdust with a bonding resin. |
psi particle |
an unstable meson that is thought to be composed of a quark and its antiparticle. |
tau particle |
a positively or negatively charged lepton whose mass is roughly 3,500 times greater than that of an electron, and that decays fairly quickly. |
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