quote:
Sound is EMR, 20Hz to 20kHz, take a look:
Spectrum of Electromagnetic Radiation ( EMR )
Or here in Wikipedia:
"The electromagnetic (EM) spectrum is the range of all possible electromagnetic radiation frequencies"
Electromagnetic spectrum - Wikipedia
Neither link says that sound is EMR. And it isn't, which is why it isn't transmitted through a vacuum.
Edited by PaulK, : No reason given.