12
DOCUMENT
7
SEPTEMBER
1895
fessor
of
Natural
History,
and Heinrich Ganter
(1848-1915),
Professor of Mathe-
matics,
had
also
studied at
the
ETH.[15]
Einstein took
courses
with
all
three and
was
especially
fond of
Mühlberg.[16]
Einstein enrolled
in
the third
year
of the
Gewerbeschule
just
after the third
quarter
of the school
year
had
started.[17]
He
was
younger
than
his
fourteen
classmates,
who
ranged
in
age
from
seventeen to nineteen,
and
he
and
his
cousin Robert
Koch,
who
enrolled
in
the
Gymnasium
soon
afterward,
were
the
only
Jewish
pupils
in
the
school.[18]
He
completed
his
course
work
successfully
(Doc. 10
lists
courses
and
grades,
and
Appendix
D outlines the
contents
of the
curriculum)
and
passed
his
examinations
in
September
1896.
Now
he
was eligible
for admission
to
the ETH
(see
editorial
note
Matura
Examinations
at
the
Gewerbeschule, Aargau Kantonsschule).
Einstein
always
retained
a strong feeling
of attachment
to
the
Kantonsschule,
recalling
later: "Diese
Schule
hat durch ihren liberalen Geist und durch den schlichten
Ernst der auf keinerlei äußerliche Autorität
sich
stützenden Lehrer einen
unvergeßli-
chen Eindruck
in
mir
hinterlassen."[19]
During
his
year
in Aarau,
Einstein
lived in
the home of Jost
Winteler,
a
professor
at
the school. He
developed
close
relationships
with several members of the
family
and took
part
in
family
discussions,
outings,
and music
sessions.[20]
Even before
coming
to Aarau,
Einstein had been
thinking
about
the
propagation
of
light
waves
through
the ether
(see
Doc.
5).
While
there,
he
started
to
think about
what would
happen
if
one
pursued
a
light ray
at
speeds
approaching
the
velocity
of
light.
In
retrospect,
he
saw
this
problem
as
"das
erste
kindliche Gedanken-
Experiment,
das mit der
speziellen
Relativitätstheorie
zu
tun hat."[21]
[15] See
Mühlberg's
and Ganter's obituaries
in Tuchschmid
1916,
pp.
61-86 and
87-97,
respectively.
[16]
See
Docs. 46
and
89.
[17]
The Kantonsschule academic
year
started in
late
April
and ended
early
in
the
following
April (see
Aargau Programm
1895/96, p.
3).
[18]
See
Aargau Programm
1895/96,
pp.
14-
16.
[19] Einstein
1955, p. 146.
[20]
See
Doc.
18
and Anna
Besso-Winteler
to
Edgar
Lüscher.
(See
Lüscher
1944,
p.
623,
quoted
in
Doc.
11,
note
1).
[21] Einstein
1955,
p.
146.
7.
Albin
Herzog
to
Gustav
Maier
[Zurich,]
25. IX. 1895.
Herrn Gustav
Maier,
Zürich
V.
Auf
Ihre
Anfrage vom
24.
ds. teile ich
Ihnen
folgendes
mit:
Nach meiner
Erfahrung
ist
es
nicht
empfehlenswert,
auch
sogenannte "Wunderkinder"
vor
der
gänzlichen Absolvirung
einer
Anstalt,
in
der einmal
die
Studien
be–
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