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What are the uses of radioactive decay?

Answer:
Neutron decay is the important supply of heat in a nuclear reactor.
Tritiated material (3H) is used to provide a glow in watches.
Radium used to be used in minute quantities to excite phosphors in compasses and watches. [But not necessarily safe]
14C is used for carbon dating in archaeology, and K-Ar radio decay is used for longer periods.
Neutron sources are used for x-raying of metals.
Radiation sources are used for sterilizing medical supplies, and food.
First answer by Suma rongi. Last edit by Suma rongi. Contributor trust: 157 [recommend contributor recommended]. Question popularity: 1 [recommend question].

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