3 ms·
Bet you a dollar that you've got an unmodulated electromagnetic audio signal not two feet from where you're sitting (if not stuck directly into your ears). Mor
by jjoonathan 11y ago
Bet you a dollar that you've got an unmodulated electromagnetic audio signal not two feet from where you're sitting (if not stuck directly into your ears).
More importantly: I think it's fair to assume that someone reading an EM spectrum has the knowledge to figure out what they mean.
- madaxe_again 11y agoI'm a physicist and I have absolutely no idea what you mean by an "electromagnetic audio signal". I think what you mean is an EM wave which happens to carry an amplitude-modulated audio signal , which is not an audio wave. Audio waves are compressional waves formed in a medium, and require a medium for transmission through, such as air, or rock, or water, or even interstellar gas. Electromagnetic waves require no medium, and are brought about by energy transference between electric and magnetic fields in free space.
- jessriedel 11y ago> I have absolutely no idea what you mean by an "electromagnetic audio signal". I think what you mean is an EM wave which happens to carry an amplitude-modulated audio signal ...So you did know what they mean.
- jjoonathan 11y ago> I'm a physicist Useless nitpicking gives us a bad name. Please stop.