| beta particle |
a high-speed electron or positron emitted in the decay of a radioactive isotope
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| beta ray |
beta radiation: radiation of beta particles during radioactive decay
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| bell-shaped curve |
normal curve: a symmetrical curve representing the normal distribution
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| benzine |
benzene: a colorless liquid hydrocarbon; highly inflammable; carcinogenic; the simplest of the aromatic compounds
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| beta rhythm |
the normal brainwave in the encephalogram of a person who is awake and alert; occurs with a frequency between 12 and 30 hertz
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