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atomic & nuclear phy

Difference between natural and artificial radioactivity

what is radioactivity? It has been observed that those elements whose charge number Z is greater than 82 are unstable. Some invisible radiations, that can effect the photographic plates emanate out of these elements. Such elements are called radioactive and the phenomenon is called radioactivity. The radiations coming out of the radioactive elements are called alpha (α) , beta (β),and ...

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Half life of radioactive elements in physics with examples

What is Half Life of Radioactive Element? “The Time during which half of the unstable radioactive nuclei disintegrate is called the half-life of the sample of radioactive element.” We have seen that whenever an α or β-particle is emitted from a radioactive element,it is transformed into some other element. This radioactive decay process is quite random and is not subjected to any ...

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