From: pauld@exploratorium.edu
Date: Fri Apr 26 2002 - 16:11:47 PDT
Message-Id: <200204262311.g3QNBhx27260@isaac.exploratorium.edu> From: pauld@exploratorium.edu Subject: Re: pinhole wave question Date: Fri, 26 Apr 2002 16:11:44 US/Pacific
Hi Geoff
Each radio photon from a given station, say one at 100 MHz, has the exact same
energy. To get more power out the station simply sends more photons per second.
The equation for the energy of a photon E in joules given its frequency in hertz
f: is E = h f where h is Planck's constant, 6 x 10^-34 J-s.
A simple model is red peppers, they come in single pepper quanta, priced $1 per
pepper. To spend more money buy more ppers.
Paul D
> I was in a physics class today that came up with a good question I
> couldn't figure out.
>
> Radio waves have a certain amount of energy. But radio stations build
> transmitters that can broadcast with different powers -- or energies.
> So how can a radio station broadcast at a given radio frequency while
> simultaneously changing the energ of those wavelengths?
>
> I feel like I should be able to figure this out, but I can't.
>
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