Sorry to have to point this out also, but you're confusing audio waves with
electromagnetic waves. They have nothing at all to do with each other. Audio
waves are just waves of compressed air (or water, or any other physical
substance), which for humans, are in the general range that you mentioned (20 -
20KHz). Electromagnetic waves, on the other hand, are what is generally
referred to as radiation. The other items you mentioned (Radio, Micro, Infrared
(heat), Visible Light, Ultraviolet, X, Gamma, Cosmic) are all electromagnetic
radiation.
Mike Frerichs
"Lin, Gary" wrote:
> The electromagnetic wave spectrum starts at Audio (0 Hz, though you
> generally don't hear <20, to 20 KHz) then goes through Radio (20 KHz
> -300,000 MHz), Micro, Infrared (heat), Visible Light, Ultraviolet, X, Gamma,
> Cosmic. Wavelength starts at infinity and shortens as frequency increases.
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