posted on Aug, 14 2011 @ 11:46 AM
reply to post by chaztekno
First of all, well done for asking. When in doubt, always ask.
The answer: no, I mean ‘at the speed of light’.
Radio waves, just like visible light, are a form of electromagnetic radiation.
The way radio waves carry sound is by encoding information about the amplitude (loudness) and frequency of the sound (something called the acoustic
waveform) ‘inside’ the radio wave. This information is encoded as ‘modulations’ or variations in the amplitude (intensity) or frequency of the
radio wave. AM radio uses amplitude modulation (that’s what the letters stand for); FM radio uses frequency modulation.
Your radio is a decoder that reconstructs the information encoded into the radio waves and turns them back into sound. These come out of the radio
loudspeaker at... the speed of sound.
How Radio Works
edit on 14/8/11 by Astyanax because: of