DOCS.
105,
106
AUGUST
1915 119
105. From Knud A. Nissen
Copenhagen W., Denmark,
Gl.
Kongevej
No
101I, 9
August 1915
To Prof. Albert
Einstein.
Highly
esteemed
Professor,
I
ask
you
most
humbly
for
permission
to
add,
with reference to
my
letters
to
you
of
Aug. 2nd, 5th, & 7th,
that
the motion
equation
of relevance with
regard
to
the
equivalency
condition
to
be
attached
to Bohr’s
stability
condition
ß
.
wo
.
r02
=
M
.
w0
.
e
+
E
.
e
has been
provided by
Prof. Stormer in
Christiania,
Norway,
and
was
mentioned
by
Dr.
Stanley
Allen in Phil.
Mag.,
Jan.
1915.[1]
M
is
the
momentum
of
a
magnet
in whose
equatorial
plane an
electron
describes
a
circular
path[2]
(number
of
revolutions
n0 =
w0/2n);
I
believe
one can
insert
E1
=
8-
e/4
f
1/sin =
(8
=
2'81e)
instead
of
E
for
Ne, A,
Kr,
&
Xe
(compare
Riecke’s report
on
Bohr’s
theory).[3]-
Is
it
permissible
to
adhere to Planck’s
dispersion theory
and
regard
o as
constant
for
Ne, A,
Kr
& Xe?[4]
Is
there
no
contradiction?
I
humbly hope
I
am
not
unworthy
of
receiving
a
discussion
of
the
difficulties
that
undoubtedly
must be
clearly
apparent
to
you
with
regard
to
this
formulation
and
its
applicability.
I
cannot
thank
you
enough
for
having urged me
to
think
over
the
weakness of
my
supporting
point,
the
“viscosity radii,”
and
I just
hope
that
I
have not
tired
you
with
my
letters
now,
when
I believe to
be somewhat
better
supported
in
that
I
rely
on
radii
proportionate
to
3)Te/ge.
Please
kindly
forgive
the
strong
impulse
to write
you,
which made
me forget
that
you
probably
have
very
much
to do.
Most
humbly
and
respectfully,
Knud
Aage
Nissen.
106. To Wander and
Geertruida
de Haas
[Berlin,]
Tuesday.
[10
August
1915]
Dear
Friends,
Today
the
packing
began.[1]
The
move
will
now
be done
without
a
furniture
van
by
a
very
rel[iable]
mover
(Franzkowiak).[2]
My
cousin
negotiated
with him.
Careful
packing
will
be
supervised by
me.
Omitting
packers,
tips
& customs,
it
costs
270 M.
The
landlord[3]
is not
causing any
trouble.
But there
is
a
lot
to
be
done otherwise. I
hope
that
the
things
leave in
3
days.
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