| radioactivity |
radiation: the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
출처: wordnet.princeton.edu/perl/webwn
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| radioactivity |
The property exhibited by certain unstable elements of spontaneously emitting mass or energy from the nucleus.
출처: www.st.com/stonline/press/news/glossary/r.htm
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| radioactivity |
Spontaneous disintegration of the atomic nucleus of some chemical elements with the emission of energetic and charged particles (alpha, beta and gamma rays).
출처: collections.ic.gc.ca/incocoin/minedef.html
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| radioactivity |
The spontaneous emission of radiation from the nucleus of an atom. Radionuclides lose particles and energy through this process.
출처: www.eia.doe.gov/cneaf/nuclear/page/umtra/glossary....
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| radioactivity |
the spontaneous emission of matter or energy from the nucleus of an unstable atom (the emitted matter or energy is usually in the form of alpha or beta particles, gamma rays, or neutrons).
출처: www.nrdc.org/reference/glossary/r.asp
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