DOCS. 176-178 AUGUST-SEPTEMBER
1909
131
difficulty
is
that
I would like to
go on a 2-day
trip
as soon as
the weather
is
good.
You
can
find
me
here
on
Monday,
whatever the
case.
If I'll
be
away
on
Thursday
or
Friday,
I'll
let
you
know
about
it in time.
I
am very
sorry
that
you'll
no
longer
be in
Zurich
when
I'm there.
I
am sure
that
Prof.
Kleiner
will also miss
you very
much.
With
best
regards,
yours sincerely,
A.
Einstein
177.
To
Conrad Habicht
Bern,
Thursday,
[3
September
1909]
Dear Konrad:
I
turn to
you
with
the
daring
and
(almost) hopeless request
that
you give
me
written
information about
something, namely,
the
specifics
concerning
your
volume
with
the
beautiful
gavottes,
some
of
which
you
and
Kugler played
for
me.[1]
How
are things
with
the
Maschinchen?
Where
does
a
poor
devil
begin?
With
best
regards,
your
Einstein
178.
To
Edgar
Meyer
Bern,
Tuesday
[28
September
1909][1]
Dear
Mr.
Meyer:
So,
now
I
sit
here
again
and
am
slowly regaining my
senses.
I left
Salzburg
with
a
wealth of beautiful
memories.[2] I have
now
carried
out
the
little
calculation
for
you
and
have
gotten
a
result
that,
although
indeed
similar
to
yours,
deviates
substantially
from
it.
First
I
present
your
argument
for the sake
of
comparison:[3]
A2
=
WW' Z
(A
=
fluctuation
in
the number
of
effective
collisions)
-
hi
where
W
=
e

-hi
W'
=
1
-
e

-
hi
Ze

·
=
i
(e
=
elementary
quantum)
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