August 8th, 2003, 03:31 PM
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Shrapnel Fanatic
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Join Date: Feb 2001
Location: Waterloo, Ontario, Canada
Posts: 11,451
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Re: Does Life Exist
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Donīt EM transmissions fade at 1/r^3 ?
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No, because when you send out a signal pulse, it moves out in a spherical shell. The area of the shell is proportional to r^2. Dividing the signal out along that surface, you get 1/r^2.
For a Cylindrical wave it goes down 1/r (think a long light bulb filament blinking on and off)
Plane waves maintain constant intensity. (1/r^0)
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