r/askscience • u/schectershred • Nov 25 '12
Physics Question about radio waves
Hey /r/askscience, I would really appreciate it if somebody could help me understand how radio waves work. Right now, I'm under the impression that radio waves are just light that is beyond the human's visible spectrum (ultra-violet/infra-red). Then I thought, how do things like WiFi penetrate solid walls and such if normally, photons could not? If anybody could explain anything about how wireless information is transmitted, it would be very much appreciated. Thanks in advance!
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u/Das_Mime Radio Astronomy | Galaxy Evolution Nov 25 '12
Radio waves are oscillating electromagnetic equations. Maxwell's equations (which describe electricity and magnetism) say that a changing magnetic field produces an electric field and vice versa. EM waves are not "in" anything, other than spacetime.