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radio waves have the longest wavelengths they are used to broadcast many signals, including radio, television, and alarm systems
microwaves despite their name, microwaves are not the shortest EM waves. besides heating food, microwaves are used in cellular phones
infrared means below red. the amount of infrared light an object gives off depends on its temperature. below colors indicate different amounts of infrared light
visible light is all the colors of the EM spectrum we can see. it is the narrowest part of the EM spectrum
ultraviolet means beyond violet. same animals can see ultraviolet light
x rays can pass through most living tissue, but are absorbed by bones
gamma rays can be used to treat illnesses and in making medical images
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