Beta ray


a stream of beta particles.
Historical Examples

The Breath of Life John Burroughs

noun
a stream of beta particles
beta ray
A stream of beta particles.

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    any of several marsupials of the genus Bettongia, of Australia and nearby regions, comprising the short-nosed rat-kangaroos, characterized by short, rounded ears, long hind feet, and a naked muzzle tip: all four species are endangered. noun a species of rat kangaroo of Australia having a short nose

  • Beta rhythm

    a pattern of high-frequency brain waves (beta waves) observed in normal persons upon sensory stimulation, especially with light, or when they are engaging in purposeful mental activity. noun (physiol) the normal electrical activity of the cerebral cortex, occurring at a frequency of 13 to 30 hertz and detectable with an electroencephalograph See also brain wave

  • Beta sheet

    a secondary structure occurring in many proteins, consisting of several polypeptide chains running in parallel or alternating directions and joined by intermolecular hydrogen bonds, creating a flexible, strong arrangement. beta sheet A structure that occurs in many proteins and consists of two or more parallel adjacent polypeptide chains arranged in such a way that hydrogen […]

  • Beta structure

    a secondary structure occurring in many proteins, consisting of several polypeptide chains running in parallel or alternating directions and joined by intermolecular hydrogen bonds, creating a flexible, strong arrangement.

  • Beta test

    Psychology. a set of mental tests designed to measure the general intelligence of individuals unable to read and write adequately or at all, used by the U.S. Army in World War I. Computers. a quality-control technique in which hardware or software is subjected to trial in the environment for which it was designed, usually after […]


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