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Physics 19 Online
OpenStudy (anonymous):

what is radioactivity?

OpenStudy (anonymous):

The energy which is evolved when nucleus gets busted.

OpenStudy (anonymous):

it is similar to electro magnetic radiation. Not in characteristics but in observation.

OpenStudy (chmvijay):

spontaneous disintegration of nucleus with liberation of energy :)

OpenStudy (anonymous):

Radioactive decay, also known as nuclear decay or radioactivity, is the process by which a nucleus of an unstable atom loses energy by emitting particles of ionizing radiation. A material that spontaneously emits this kind of radiation - which includes the emission of energetic alpha particles, beta particles, and gamma rays - is considered radioactive.

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