Ch#9 (The Atomic Nucleus) Radioactivity And Natural Reactivity URDU /HINDI physics 12 (learning 4u)

Ch#9 (The Atomic Nucleus) Radioactivity And Natural Reactivity URDU /HINDI physics 12 (learning 4u)

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Radioactivity, a Natural or Man-Made Phenomenon. The decay of unstable atoms releases radiation, a phenomenon called radioactivity. As unstable atoms exist in all matter, we are surrounded by natural radiation. Radiation can also come from man-made sources, through military, medical or industrial applications.

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