562 DOCS.
543,
544 MAY
1918
543. To Felix Klein
[Berlin,
19
May
1918]
Esteemed
Colleague,
I shall be
to send
you my
recent
published
notes.[1]
On
Thursday I
sub-
mitted
a fairly
extensive
exposition
of
my
views
on
the
energy
law.[2]
I shall send
you
the
correction
proofs,
which
I
am
probably going
to be
receiving
in
a
few
days.
I
was
very sorry
that
I
could
not
attend the
lectures of
my
dear
colleague
Planck.[3]
My
doctor
has forbidden
me
all those
sorts of
things, unfortunately.[4]
I
shall be
to
register myself
with
the
German Mathematicians
Association,
as
you
consider
it
appropriate.[5]
With
amicable
regards, yours truly,
A. Einstein.
Recipient’s
note:
“Now
the entire
Levi-Civita
material.
Should I
write
a
note
on
hypothesis
B?”
544. From Hermann
Weyl
Zurich,
20
Schmelzberg St.,
19
May
1918
Dear
Colleague,
With
my
“correction” of sheet
15,
I
really
have
blundered![1]
Although
the
statement at
the
top
of
p.
226 correct:
on
the
sphere,
h
is
an
odd function
of
x4
=
z,
just
as
in
the
fluid
cap case,
eq.
(66),
h =
b0/z.[2]
What
I
incomprehensibly
overlooked,
however,
is
this:
that the
boundary
condition of
vanishing pressure
on
both latitudinal
spheres
does
not
require
the
same
value for h but
rather the
same
value for
ƒ.[3] Now,
the
equation
for
A:[4]
(*)
dA
*=7fcrv,,
yields
the
solution
A,
which
is
an
odd
function of
z;
hence
the
corresponding ƒ
=
A/h
is
even.
Because
of
the
arbitrary
the
solution of
(*), ƒ can
also be
replaced by
ƒ+
const./h.
If
on
both
boundary
spheres
r
=
r0,
symmetrical
to
the
equator,
ƒ
must
assume
the
same
value
f0
=
v/u0 ,
then
this
const.
=
0
Previous Page Next Page