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From: williams@kirk.DEC (John Williams 223-3402)
Newsgroups: net.physics
Subject: Space Heater efficiency
Message-ID: <3381@decwrl.UUCP>
Date: Wed, 31-Jul-85 12:27:25 EDT
Article-I.D.: decwrl.3381
Posted: Wed Jul 31 12:27:25 1985
Date-Received: Fri, 2-Aug-85 06:03:07 EDT
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Organization: Digital Equipment Corporation
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	Sorry, but space heaters are not 100% efficient.

	The energy spectrum is continuous from DC to Light and beyond.
A space heater has an optimized bandwidth for infrared, yet produces
energy in all bands, including light ( which is visible ), and sound
( you can hear them click as they expand and contract in phase lock
with the thermostat ). Beyond normal energy output, there is also
noise.

	If you were implying that it is efficient because all the energy
is accounted for, I take exception to this definition of efficiency.
The basic idea of entropy is that not all the energy is converted into
a particular frequency band of selection. To put it in other words,
not all of the energy is used to heat the room.

						John.