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EM waves

communication and their uses

QuestionAnswer
what does EM stand for? electromagnetic
what are the EM waves from lowest frequency to highest frequency? Rabbits Meet In Very Unusual eXpensive Gardens radio waves, microwaves, infra-red, visible light, ultraviolet, x-rays, gamma rays
what are microwaves used for? satellite communication and mobile phones
what are infra-red waves used for? remote controls and optical fibres (used over phone lines)
what is visible light used for? photography
Created by: rv1
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