radiowave - the longest wavelength em wave, microwave - the second to lowest frequency em wave, infrared - slightly larger wavelengths than we can see, visiblelight - in the middle of the spectrum, ultraviolet - slightly shorter wavelengths than we can see, xray - the second smallest wavelength, gammaray - the largest frequency, electro - the E of EM , magnetic - the M of EM,

EM Spectrum

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