222
DOC.
4
KINETIC THEORY LECTURE
NOTES
_ .
MH
cos
5
Setzen
wir
=
x
©^
NM
Mol.
gew
=
Io
+a
xe
*
1
X
1
\-a J
-a
e
Xdx
(ae
a +
ae")
-
(ea
-
e
")
e"
-
e
"
Curie[75]
für
kl[eine]
a
1
+
a(1
-
a)
1
(1
+
a)
-
(1
-
a)
~
a
I
_
1
M
Ts~
30
H
3
RT
0
J
cosh
a
H

sinh
a
(cosh
a
1
I
sinh
a a
Langevin.[76]
I cosh
a
1
NMH
Also
-
=
a
=
I0
sinh
a a
RT
Molek[ular]
Feld
(Weiss)[77]
Hm
=
NI
MHm
MN MN I
0
1
- -
li
MN I
0
Um
©
'o
Io
I/I0
als
Funkt
der
Temp[eratur]
ableitbar
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