On Mon, 2005-02-21 at 10:42 -0600, Martin McCormick wrote:
> 	Given that thermocouples produce electrical energy as long as
> the temperature is above absolute 0, then why couldn't one put a few
> million junctions in series with each other and get some voltage from
> ambient temperature?

You are missing an EXTREMELY critical addition you your statement above.
Aside from needed to be above absolute zero, you need a temperate
DIFFERENCE between the two sides of the couple. If there's no delta-T
you get nothing out of it. And of course, but having a delta-T and
extracting energy the two sides of the couple will tend to a temp delta
of zero.

TTYL
 

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