| radioactivity |
A natural and spontaneous process by which unstable atoms of an element emit energy and/or particles from their nuclei and, thus, change (or decay) to atoms of a different element or a different state of the same element.
출처: eed.llnl.gov/mi/glossary.php
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|---|---|
| radioactivity |
the process in which atoms undergo internal change with the resultant emission of electromagnetic or particulate radiation.
출처: www.sce.com/SC3/PowerandEnvironment/PowerGeneratio...
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| radioactivity |
Radioactivity is a natural process by which the excess energy of unstable atoms is released spontaneously in the form of particles or waves. The end product of this activity is radiation.
출처: www.ene.gov.on.ca/envision/deloro/glossary.htm
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| radioactivity |
is the property possessed by some elements that give off energy in the form of waves or particles. Radiation may be alpha, beta or gamma.
출처: www.msema.org/pte/rep/Definitions.htm
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| radioactivity |
The spontaneous breakdown of one type of atomic nucleus into another (Stephen Hawking).
출처: diabloblanco666.tripod.com/scienceterms.html
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