Beta-naphthylamine
a white to reddish, crystalline, water-soluble, extremely toxic solid, c 10 h 9 n, used chiefly in the manufacture of azo dyes.
historical examples
coal raphael meldola
coal raphael meldola
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an electron or positron emitted from an atomic nucleus in a certain type of radioactive decay. historical examples a brief account of radio-activity francis preston venable noun a high-speed electron or positron emitted by a nucleus during radioactive decay or nuclear fission beta particle a high-speed electron or positron, usually emitted by an atomic nucleus […]
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beta radiation beta radiation [(bay-tuh)] note: beta radiation, unlike alpha radiation, has some penetrating power and can p-ss through clothing and wooden walls.
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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.
- 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