DOC.
26 THEORY
OF
TETRODE AND SACKUR
131
Translations
of
editorial
notes
[5]
Insofar
as
this
question
can
be
posed
at
all
clearly.
Not the absolute values of
the
entropy
constants
are
thermodynamically defined,
but
always only
the
differences of the
entropy
constants of
two
domains
of
state of
one
and the
same
material
system
are
defined.
[13]
In this
formula,
n
is the number of
degrees
of freedom of the
system,
which
has to be assumed
in
order to
represent
the
actual thermal behavior
of the
system
in the normal
area
that has
to
be considered. The
place
of
the
phase
_E
integral
for
a
"dormant"
degree
of freedom has
to
be taken
by
the value
e
0;
this is
especially
to be considered in
cases
where the
system
has
only
"dormant"
degrees
of freedom
(at
absolute
zero).
Because it is
clear,.