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-----Original Message-----
From: Bob Sciamanda [mailto:trebor@VELOCITY.NET]
Sent: Monday, November 12, 2001 2:37 PM
Consider that the free expansion (into a vacuum compartment ) of an
isolated gas involves an entropy change with zero "working "
or heating"
from the outside. The state has changed, and so has the
entropy, with no
possible correlation to any "working" on the system.
Entropy is determined by the system state. Conventially, Working and
Heating refer to
the history of specific processes which (among many other "equivalent"
possibilities) led to that state.