240
DOCS.
329,
330
DECEMBER
1911
future
in
showing
how this effect follows from the
theory
of
quanta
and
the model of
the
electric
solid
body.
I
had
to
learn
an
enormous
amount and
am
quite
exhausted.
But
no one
has
taught
me more
than
you,
for which I
thank
you
most
sincerely
and
cordially,
and
I
close with
the
request
that
you
continue
teaching
me
through
your
criticism.
I
took the
liberty
of
making
frequent
reference
to
you,
especially
to
the conversation
you
undertook
with
me
at
the home of
our
mutual friend
Marx in
Karlsruhe,[5]
which
was highly
instructive for
me.
Wishing you
a
merry
Christmas,
I
remain
yours sincerely,
Haber
330. To Heinrich
Zangger
Prague. Monday
[25
December
1911][1]
Dear friend
Zangger,
I'm
happy
about
my
experiences
in
Zurich,
and wish
to
thank
you again sincerely
for
having
invested
so
much of
yourself
in
this
matter.[2]
Sincere
thanks
also
for the
pleasant
time
you
showed
me
in
your
house.-[3]
But
now
I
would like
to
have
you
as
my
opponent
for
once, to
see
what that's
like!
Unfortunately,
there
is not
much
prospect
of
such
a a
combination.
Meanwhile,
I
rejoice
in
the
thought
that
we
will be able
to
see
each other
regularly
again
and to
talk
shop.
The relation
I
expected regarding
the mol.
motion of
solids,
fik2v
=
const.,
does
not
hold;
I ascertained
this
on
the
basis
of Nernst's material.
I received
another letter
from
Haber.[4]
He
is
now
also
working
on
solids.
He
has the
advantage
and
the weakness of
not
being
disturbed
by
the
pallor
of
his
thought.
He
simply
claims
that he
can
explain
the
compressibility
and
diamagnetism
and
paramagnetism
in
quantitative
terms
by using
exclusively
electrostatic
forces.
He
also believes
that
he
can
calculate the
energy
differences
of
substances
at
absolute
zero
from
the
proper frequencies.
But
I believe
that
he
proceeds
far
too
uncritically
and
pays
far
too
little
attention
to
common sense.
In
any case,
one
has
to
admire the abundance of
his ideas. His
paper
will
appear
in the
Verhandl. der Deutsch.
phys. Ges.[5]
Habicht
recently
gave
a
lecture
on
the
Maschinchen,
with
exp.,
before the
Berl.
phys.
Gesellsch.,
and had
enormous success.
He
has
now
broken
the
resistance
against
this
thing;
I
believe
that the
Maschinchen[6] will
soon
supplant
the sensitive
quadrant
&
filament electrometer.
With
best
regards
to
you
and
your
wife,
your
Einstein
Kindest
regards to Heller.[7]
[...][8]