1304 
case the resulting magnetization may very well be measurable. In this 
way most of the apparent contradictory observations on magnetization, 
caused by discharge-currents of condensators must be explained; for 
the obtained magnetization is often just opposite to that which would 
be expected. 
3. Further we may put the question, what the magnetization 
becomes when on a continuous current of constant intensity we 
superpose an alternating current, the intensity of which diminishes 
to zero. Here too we shall hold to the conceptions of Weiss 
in the simple form given them above. Let the field excited 
by the continuous current be M, and have a positive direction and 
let the field of the alternating current successively have the values 
H,, H,... where H,,H,... may be positive, H,, H,... negative. 
If H and H, have the same direction, we have originally a 
field H,+-.H,; after a change of sign of the alternating current, 
the fields have the opposite direction and the resulting field is 
-—H, + H,; after the second change they are again equally directed 
so that the whole field is H, + H,, and so on. The magnetizations 
corresponding to these fields are resp. (without attending to the 
De h? 
sig =m |1l— — dl 1 Ma 
sign) M,=m | EL nd f, „| a | m 
h? 
i EE) -+, In general 
: he - hr ® 
Mo, == = 5 = ; Moy 41 ml nt 5 5 ’ 
(=): (Hon4i+H,)*_ 
Now generally Ha, < |A2,|. If however Ho + H, >| Ho, —A, 
(where always |H», is supposed to be larger than h—+ H,, as 
else no sudden change of direction of the crystals would be 
possible) the cone which by the field |//,| — H, had “changed 
sign” in negative direction, will again as a whole’ “change sign” 
in positive sense by the field MH», + H,. As long as therefore 
Hon + H, >> Hol — H,, or what comes to the samelHonl — 
— Hoge Z2H,, there will be no magnetic moments making an 
obtuse angle with the positive direction of the magnetic forces within 
h 
the cone the half top of which is given by cos a — EE „Within 
Nas H 
this cone all moments must have been “tipped over” in positive 
sense, so that the resulting magnetization must correspond to that 
cone. This changes however when HH, becomes smaller and smaller, 
because then from a certain limit the condition is no longer satistied 
0 
