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Re: Some Thoughts



Bob Sciamanda caught a Big one:

Leigh Palmer wrote:
. . .
All reversible processes which produce the same change in
state require the same heat Q, so specification of a particular
process is not required. Thus sayeth the second law of thermodynamics.
. . .

Leigh

If this were so, a reversible engine cycle involving a non-zero heat
transfer
would be forbidden! I think you meant "the same integral of dQ/T..."
(Just one snippet of this thread which I caught while travelling.)

Quite so. I knew I'd been in this discussion too long; it's addled
my brain. The invariant quantity is indeed as Bob says.

Leigh