On Fri, Mar 06, 2009 at 01:58:20AM -0500, Dave McGuire wrote: > 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.
When I leave my office at the end of the day, I can definitely see the
LEDs on the back of my Sun Ray through the window. Do I win a prize? :)
Ceri
--
That must be wonderful! I don't understand it at all.
-- Moliere
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