DOC.
4
KINETIC THEORY LECTURE NOTES
193
j
=
(
*
)
(H + Wl)
1(1
-
a
W)
=
a
H
1
-
a
W
a
and
W
can
be
determined
from
the
paramagnetic
state.
Everything
in
a
is
known
except
for
the molecular
weight M,
hence
possible
to
determine
this.
Magnetic
molecules
of iron
diatomic
for
ordinary iron.[88]
Brownian Motion of
Rotation[89]
X
parameter.,
in
the
absence
of
an
effective
cause,
let
all
X
X2
be
equally
probable.
If
force
-aX,
then
energy-a
-.
Then
dW
=
const
-e
l^dk
From
this
X5 =
-
a
We
imagine system,
value
k,
2
changes
during
time
t
1)
-ak.Bx
(B
=
motility)
2) Change
±A
due
to
irregularity
of thermal
processes.
Xt+t
=
Xt
-
aBXx
x
+
A
=
At(l
-
aBx)
+
A
Xf+t =
X2x
=
A2(l
-
2aBx)
+
2XtA
-
2aBxXtA
+ A2
vanishes vanishes
A2
=
2aBxX\
=
2B&x
If
we are dealing
with
the rotation of
a
sphere,
then
we
have to set k
=
angle
of rotation
B
=
__L_[90]
8ittiP3
4miP3
N
[p.
44]