802 DOCUMENT 564 JUNE 1918
Von
dem
was
sonst in der Welt
geschieht
habe ich
genug
bis
zum
Halszäpfchen.
Und noch ist kein
Ende abzusehn.
Herzl Grüsse
von
Ihrem dankbaren Schüler
Walter Dällenbach.
Herr
Besso wird Ihnen nächstens schreiben und lässt inzwischen herzlich
grüs-
sen.
ALS.
[9
074].
[1]The
dissertation (Dällenbach
1918),
which Dällenbach had
begun working on
at the ETH in
autumn
1916 under the
supervision
of
Hermann
Weyl
(see
Doc.
270,
note
6),
was
republished
as
Däl-
lenbach 1919a.
[2]The
integration
extends
over
the volume traversed
by a
molecule
during a physically
short time
interval. The
equation expresses
the condition that molecules
stay
neutral
during
their motion.
[3]See Lorentz
1904b.
[4]The
summations extend
over
all
charges
ek
within
a
molecule; N is the number
of
molecules in
a
unit
volume;
here and in the
following
the
square
brackets denote the
vector
product.
[5]At
this
point
in the
original
text,
Dällenbach draws
an arrow pointing
toward the
previous equa-
tion.
[6]At
this
point
in the
original text,
Dällenbach
draws
an arrow pointing
toward the last boxed
element
above.
[7]See
Cohn 1900.
[8]At
this
point
in the
original
text,
Dällenbach
draws two
arrows pointing
toward the second and
third
terms,
respectively, on
the
right-hand
side
of
the
previous equation.
[9]At
this
point
in the
original
text,
the
author
draws
an arrow pointing
toward the second
dipole.
[10]As was
first
pointed
out
in Laue
1911a,
p.
530,
the
symmetry
of
the
energy-momentum
tensor
expresses
the law of the inertia
of
energy,
which in this context refers
to
the
equivalence
of
momentum
and
energy
flux divided
by
c2,
an
equivalence
first stated in Planck 1908.
[11]At
this
point
in the
original
text,
Dällenbach draws
an arrow pointing
toward the
integrand
of
the
previous
equation.
[12]Jakob
Laub. The criticism
of
Einstein
and
Laub 1908b
(Vol. 2,
Doc.
52),
quoted by
Dällenbach
in the
next
paragraphs,
is
omitted in the Annalen version
of
his dissertation (Dällenbach
1919a).
[13]Hermann Minkowski;
see
Minkowski 1908.
[14]In
his
paper,
Dällenbach
points
out
that
only microscopic
laws have
a
strict
validity, suggesting
that the
asymmetry may
be
a
result
of
the
averaging process.
[15]Submitted
to
the ETH
a
month later
(see
Doc.
598).
[16]Michele
Besso had
earlier
pursued common
research interests with Dällenbach and
Weyl
(see
Doc.
283).
[17]Einstein’s
and Smoluchowski’s
papers on
Brownian motion
are
Einstein
1905k, 1906b, 1907c,
and 1908c
(Vol.
2, Docs.
16,
32,
40, and
50),
and Smoluchowski 1906 and 1916. Einstein’s
paper
on
critical
opalescence,
Einstein 1910d
(Vol.
3,
Doc.
9),
was
also included in the
reading
(see
Doc.
591).
[18]See
Doc.
472, note 3,
for
a
characterization
of
Weyl's theory.
For Einstein’s
objection, see
Ein-
stein 1918h
(Vol. 7,
Doc.
8),
a
critical
note
appended
to
Weyl
1918b. The text
of
Einstein’s
note
can
be found in Doc. 512.
[19]See
Einstein 1918h
(Vol.
7,
Doc.
8).
[20]At
this
point
in the
original
text,
the author draws
two
arrows, pointing
toward "Körper" and
"Uhr,"
respectively.
[21]See
Einstein 1918h
(Vol.
7,
Doc.
8).
[22]The simplest
candidate for the
Lagrangian
in
Weyl’s theory
(see Doc.
499,
note
4)
gives
fourth-
order field
equations.
The result
to
which Dällenbach refers is mentioned
(without
proof)
in
Weyl
1918d,
p.
411.