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2014-12-04T11:04:10+08:00
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2014-12-04T13:38:59+08:00
Radioactivity refers to the particles which are emitted from nuclei as a result of nuclear instability.Alpha radiation is onizing radiation consisting of alpha particles, emitted by some substances undergoing radioactive decay.Gamma radiation, also known as gamma rays, and denoted by the Greek letter γ, refers to electromagnetic radiation of an extremely high frequency and are therefore high energy photons.Beta radiation is radiation due to beta particles, which are electrons (or, sometimes, positrons); mostly, when you come across the words 'beta radiation', what is meant is what is produced by beta decay (radioactive decay which produces beta particles … either electrons or positrons).
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