DOCUMENT 344 JANUARY 1912 395
ten
verdunkelt.[5] In
Berlin haben sie
nun
noch
gefunden,
dass sich
gasförmi-
ger
Wasserstoff bei
genügend
tiefen
Temperaturen
wie
ein
einatomiges
Gas
verhält.[6]
Ich habe eine Theorie dazu
gemacht,
deren Basis
jedoch
nicht
si-
cher
ist.[7]
Ich werde Ihnen dann davon erzählen. Die Columbia Universität
in
New
York
hat mich für nächsten Herbst
eingeladen
zum
Vortragen.
Ich
gehe
aber nicht
hin.[8]
Nach Wien
gehe
ich auch nicht. Ich
mag
diese öffentliche
Vortragerei
nicht.[9]
Abraham hat meine Gravitationssache
zu
einer
geschlos-
senen
Theorie
ergänzt,
aber bedenkliche Denkfehler dabei
gemacht,
sodass
die Sache wohl
unrichtig ist.[10]
Das
kommt
davon,
wenn man
formal
operiert,
ohne dabei
physikalisch
zu
denken!
Seien Sie
von
Herzen
gegrüsst
von
Ihrem
Einstein
Ich freue mich
sehr,
bis wir
uns
wiedersehen. Vielleicht
zeigt
sich
vor
dem
Sommer wieder einmal ein braver Patient
in
Prags Nähe![11]
Beste Grüsse
von
Haus
zu
Haus!
ALS
(Estate
of Heinrich
Zangger, Zurich).
[39
644]. Only
a
fragment
has
been found.
[1]Date
provided by
Helen
Dukas,
probably
on
the
strength
of information from the
Zangger
Estate.
[2]Peter Debye had been advanced from extraordinary professor
to
full professor
at
the
Uni-
versity of Zurich
two
weeks earlier (see
Aus dem
Protokoll
des
Regierungsrates
1912, no. 54,
11
January
1912,
SzZSa,
U 110 b .2
(48)).
[3]In
fact,
Debye
was
formally appointed
Professor of Mathematical
Physics
and Theoreti-
cal Mechanics
at
the
University
of Utrecht
on
3 February (see
Nederlandsche
Staatscourant,
4/5
February 1912,
p.
[2]).
In
a
letter,
dated
23
January,
Einstein had been informed of
his
own
nomination
to
a
position
at
the ETH
in
Zurich
(see
Doc.
341).
[4]See
Einstein 1912b
(Vol. 4,
Doc.
2).
See
also
Vol.
4,
the editorial
note,
"Einstein
on
the
Law of Photochemical
Equivalence,"
for
a
discussion.
[5]See
Doc.
313, note
7,
for information
on
Einstein's
paper
on
residual
rays.
He had
argued
that the
two
observed maxima
were
in
fact
one
wide
resonance
peak
(see
Doc.
331).
The fact
that
new
experimental
data found
by
Rubens's collaborator
H.
Hollnagel at
first seemed
to
con-
firm the existence of the
two peaks
is
mentioned
in
Rubens
1913.
This
paper presents
further
experimental results, however,
from which it
is
concluded that selective
absorption by water
vapor in
the air had been
responsible
for the observation of
two
maxima.
[6]See
Eucken
1912.
[7]A
year
later
Einstein and Otto Stern submitted
a
paper in
which
a
theoretical
explanation
is
given
for Eucken's
results
(see
Einstein and Stern 1913
[Vol. 4,
Doc.
11]).
See Vol.
4,
the
editorial
note,
"Einstein and
Stern
on
Zero-Point
Energy"
for
a
discussion.
[8]The
offer
is
made in Doc.
337,
and Einstein declines it
in
Doc.
346.
[9]An
invitation
was
extended
to
Einstein
to
lecture
in
Vienna
at
the end of
January
(see
Doc.
326, note
1).
Two lectures
are
mentioned
in
Doc.
354.
[10]See
the
preceding document,
note 3
for
more on
the
controversy
between Einstein and
Max Abraham.
[11]On traveling
to
Prague
in
June
(see
Doc.
268)
and
again
in
September
of the
previous
year
(see
Doc.
286),
Zangger,
a
doctor
and forensic
specialist,
had visited
a
patient
on
at
least
one
of those occasions
(see
Doc.
303).
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