DOCS.
636,
637
OCTOBER
1918 671
thoroughly
acceptable.[8]
You will
certainly discover, though,
that the
condition
relating to
the
moment of
passing
is
independent
of
the
choice
of coordinates.
Philipp
Frank
in
Prague will
certainly
be
glad
to
provide you
with
the
above
articles
if
you
write him
a
card.
They are
worth
reading per
se.
It
is too
complicated
from here.
I
energetically
contest
that
in
my
first
paper[9]I
had used two different
mean-
ings
for
E1[10]
E' =
E
-
v(T), nothing else![11]
[The
consideration
there
is
the
formulation of
the
statement: The
light signals
with
which
the
observer of
the
“moving” system registers
their
simultaneity,
have-observed from
the
system
“at rest”-propagation
velocity
c.]
Hence
a
defined
quantity
seen
from
the
sys-
tem “at
rest.”
I likewise
entirely uphold
what
I
wrote
about the
clocks
in
my
first
paper
along
with
everything
else I
wrote there.
It
is
a
pity
that
we
cannot discuss
these
things orally!
I
am
curious who between
us
will
be
the
first to
manage
to
come
and
see
the
other. Who
can
know? Could
I
perhaps
visit
you,
if I
came
to
Vienna?[12]
For
the
time
being
it
is
out of
the
question,
for when
the
semester
is
over
I
shall be
visiting my boys.
Cordial
regards,
yours,
Einstein.
637. From Edgar
Meyer
Zurich,
20
October
1918
Dear Mr.
Einstein,
Many
thanks
for
your
letter.[1] I just want to report
quickly
how
matters
stand
here. Your
proposal
was
before the
faculty yesterday
and
was
accepted,
thus
you
will be with
us
every
semester for about
5
weeks![2]
I
cannot
tell
you
how
pleased
I
am.
But
that
goes
for
all
of
us
here.
Acceptance by
the Education
Director
is self-evident,
of
course.[3] I
also
requested
that
it start
this
semester
already,
and
I
think that
February
will
suit
you
well.
At
that
time
Debye
also
will
be
giving
two
lectures at the
Physical
Society,[4] so
it
will
become
a
February
of
physics
that
could
even
bear
comparison
with scientific activities in Berlin.
Since,
furthermore,
Weyl
is
remaining
with
us,[5]
it
really
could
turn
out
to
be
very
nice indeed.
Thank
you very
much for
the
suggestion regarding
the fluctuation
measure-
ments.[6]
That
has
long
been
one
of
my
future
projects.
The
energy
relations
obviously
cannot be
understood from the
couplings.
But
I
intend to
proceed
somewhat
systematically.
You
see,
if
the
fluctuation
measurements
really
are
to
be
very clean,
we
would have to be able to take absolute measurements
because,
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