On Mar 5, 2009, at 12:34 PM, Sridhar Ayengar wrote:
Sorry, the engineering nerd in me forces me to reply... >> Does
all the power consumed always get turned completely into heat?
> Probably not immediately, but it is the worst case ..
Simple answer is YES. Consumed energy is always turned into heat
even if not immediately. May initially come out as photons, sound
waves or whatever, but in the end always gets transformed to heat
one way or another. Physics says so.
Some small portion of it doesn't get necessarily turned into heat
in the room where the equipment is located. The physics you're
quoting applies strictly to closed systems.
Ok Sridhar, I'll bite. What of that energy *doesn't* get turned
into heat? Any generated noise will hit the walls and turn into heat
via mechanical friction as vibrations are absorbed, any emitted light
(say, from the LEDs) will strike the walls or other objects and
dissipate as heat, etc etc.
Oh, and I'll see you in a day or two! :) The truck containing
your VAX-7000 and PDP-11/70 is within view of my hotel room window as
I type this..
-Dave
--
Dave McGuire
Port Charlotte, FL
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