DOCUMENTS
19,
20 MAY-JULY 1904 27
[4]See
Einstein 1904
(Vol. 2,
Doc.
5), in particular
§5
where
a
proportionality
is
derived be-
tween
the inverse
temperature
and
a
quantity
that
is
of the
same
order of
magnitude
as
the
wavelength at
which the
energy
curve
for
black-body
radiation for that
temperature
reaches
its
maximum. The numerical
constant in
this
analog
of Wien's
displacement law is
the
product
of
Boltzmann's
constant
and the
constant occurring
in
the Stefan-Boltzmann
law.
[5]Paul
Habicht, who had
registered
his
departure
from Bern
on
11 January
1904 (see
Schriften-Kontrolle für Kantonsfremde Aufenthalter 1899-1902, SzBe-Ar,
E
2.2.1.1.
113,
"H,"
no.
42).
[6]Habicht's father Johann Conrad (1842-1931), mother Susanna Elisabetha
Habicht-
Oechslin (1850-1908),
and
unmarried sister Emma Maria (1880-1954).
19.
To
Helene and
Milivoj
Savic
[Bern,] Sonntag
[15
May
1904][1]
Meine Lieben!
Gestern
Morgen kriegten
wir einen
gesunden
Buben.[2]
Miza
ist
wohl[3]
und
läßt Euch herzlich
grüßen.
Gruß
von
Eurem
Albert
E.
Der
Junge
heißt auch Albert.
AKSX.
[80 055].
The
description
of lot
71 in the
Charles Hamilton Galleries dealer
catalogue
127
(10 April
1980)
states
that the
original
is
"penned
on verso
of
an
official Swiss
postcard
form,
addressed in Serbo-Croat and
bearing
Berne and
Belgrade postmarks."
[1]Dated
by
the son's birth.
[2]Hans
Albert
(1904-1973).
[3]A month later Einstein-Maric
wrote
that she "was
very
weakened
by
the birth
and
greatly
in
need of
good
care"
("war
durch die Geburt sehr
geschwächt
und bedurfte
grosser
Scho-
nung").
See Mileva Einstein-Maric
to
Helene
Savic,
14
June
1904,
Milan
Popovid, Belgrade.
20. To
Mileva Einstein-Maric
[Kandersteg,] Montag [25 July 1904]
Liebes
Weib.
Ich habe bei herrlichem Wetter den tiefblauen Blausee
gesehen
und
nun
sind wir hier in
Kandersteg
bei
wolkenlosem Himmel
eingetroffen.[1]
Herzliche Grüße
an
den Filius Rabatzel und Fuxl Dein
Albert.
AKS (MWalB,
Albert Einstein
Collection,
no.
20).
[71
261].
The
verso
is
addressed
to
"Frau
Mileva Einstein
Kramgasse
49
Bern.,"
and
postmarked
"Kandersteg
26
VII 04."
[1]The
Blausee
(900m)
and
the
village
of
Kandersteg (1176m)
are
in
the Bernese Oberland.
Einstein
may
have been
accompanied
by
Solovine, who
was
visiting
Bern
at
the time
(see
Doc.
18
and the
following two documents).
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