Re: W+Q deprecated

[Jim Green <JMGreen@SISNA.COM>]

> Can you give me an example or two of a reversible process for which
> this division into W and Q fails?
>
> Or to put the question another way, is there a problem with the
> standard formula dS = dQ_rev/T which implicitly assumes that Q_rev is
> the same for any reversible path connecting the initial and final
> states of the system (assumed to be equilibrium states)?

Let me chime in here: Can _you_ give an example or two where the First Law
as stated _is_ helpfully applied?  -- ie a process where Q and W are both
present _and_ are both identifiable?  _Except_ of course the ubiquitous
adiabatic cylinder and piston which started this whole mess -- under the
guise of "national security."

Jim


Jim Green
mailto:JMGreen@sisna.com
http://users.sisna.com/jmgreen