AH020387
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do light, sound, and radio waves move/vibrate in an up and down motion?
Light, Sound, Radio Waves: Up/Down Motion?
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AH020387 said:
sound waves, no, they are compressions or decompressions, and their displacements are forward and backward
light and radio waves, yes (but there's nothing to displace)
you need to do extensive reading on this, to understand it … start with wikipedia 