Talking about radiation, people may immediately think of some high technology facilities, such as X-rays, nuclear power stations, nuclear weapons etc. However, there are consumer goods that give out radiation or make use of radiation. Radiation is also widely applied in some industrial processes.

(1)     The following are examples of consumer goods containing radioactive materials:

Luminous watch and clock		Smoke detector		Ceramic ware and ornament		Cigarette

(2)     Radiation is usefully applied in some industrial processes. Some examples are:

Sterilization of medical utensils and cosmetics	Food preservation	Quality control

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