3.12
recall some of the uses of electromagnetic radiations, including:
* radio waves:broadcasting and communications
* microwaves: cooking and satellite transmissions
* infrared: heaters and night vision equipment
* visible light: optical fibres and photography
* ultraviolet: fluorescent lamps
* x-rays:observing the internal structure of objects and materials and medical applications
* gamma rays: sterilising food and medical equipment
Good
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