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The same image appears on https://simple.wikipedia.org/wiki/Electromagnetic_spectrum https://simple.wikipedia.org/wiki/Electromagnetic_spectrum with the text:
by noselasd 11y ago
The same image appears on https://simple.wikipedia.org/wiki/Electromagnetic_spectrum https://simple.wikipedia.org/wiki/Electromagnetic_spectrum
with the text:
"NOTE: The AUDIO entry in this graphic is there for comparison only. Sound waves and light are two different things entirely."
Imo still somewhat confusing. I've never heard anyone refer to something on the EM spectrum as audio before.
- aylons 11y agoYou went to the simple image wikipedia just to find a citation that agrees with you, while the english Wikipedia has a whole artcicle describing it in quite an opposite way: https://en.wikipedia.org/wiki/Audio_signal https://en.wikipedia.org/wiki/Audio_signal If it is confusing, is because you do not understand what a "signal" means. A signal is not the phenomenon itself, it is a representation of it. An audio signal is a signal that represents sound, but it is not sound itself. If it were, you would not need to call it a signal, it would be simply "sound". In a slightly different use of adjective, an acoustic signal is a signal (that may or not be audio, eg, ultrassound) that is carried by sound waves. Actually, it only gets confusing if you try to be pedantic, as GP did. Everyone knows what an audio signal in a EM chart.