3 0 D O C . 2 N O T E O N P A P E R B Y S C H R Ö D I N G E R
stress due to the gravitational attraction between the two bodies. Assuming the
rod is straight and parallel to the -axis of the coordinate system, the first equa-
tion (1a) yields
.
Since in our case the first integral cannot vanish, the second cannot, either. There-
fore, cannot vanish everywhere on . This consideration can be
applied, mutatis mutandis, to all cases where the field under consideration brings
about interactions. However, this is not the case for the field that Schrödinger con-
siders.
In my opinion, the formal scruples (1) and (2) cannot lead to a rejection of the
momentum-energy theorem in the form I suggested. After all, the equation which
expresses the theorem is valid for an arbitrary choice of the system of reference;
and to raise additional formal demands does not appear justified. With respect to
objection (1), I stated my position in a paper which will soon appear in the Sit-
zungsber. d. Berl. Akademie.
Translator’s Note
{1} The reference is to document 41 in Volume 6.
x1
0
1
∫T1
dS t1
1
nx1) cos( t1
2
nx2) cos( t1
3
nx3))dS cos( + +
∫(
+ =
t1
1
t1
2
t1
3
, , S
[7]