The value of may also be put in the form
|
(284)
|
Now we may determine
for
from (279) where the limits are expressed by (281), and
for
from (284) taking the limits from (283). The two integrals thus determined are evidently identical, and we have
|
(285)
|
i. e.,
varies as
. We may therefore set
|
(286)
|
where
is a constant, at least for fixed values of the internal coördinates.
To determine this constant, let us consider the case of a canonical distribution, for which we have
|
|
where
|
|
Substituting this value, and that of from (286), we get
|
|
|
|
|
(287)
|
|
|
Having thus determined the value of the constant
, we may