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22 October, 21:48

How can humans use the electromagnetic spectrum in everyday life?

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  1. 22 October, 21:54
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    - - look both ways before crossing the street (light)

    - - listen to the weather report (radio waves)

    - - make a cellphone call (radio waves)

    - - watch the game on TV (radio waves)

    - - heat up a hunk of meatloaf for a fast snack (microwaves)

    - - stand in the sunshine to warm up (infrared radiation)

    - - lie in the sun to work on your tan (ultraviolet radiation)

    - - the dentist makes a new set of pix of your teeth (X-rays)
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