DOC.
15
COMMENT ON DOC. 13 421
Published in
Annalen
der
Physik 34
(1911):
590.
Dated
Zurich, January
1911,
received 30
January
1911,
published
9
March
1911.
[1]Einstein 191lb
(Doc.
13).
[2]Madelung
1909, 1910a,
and
1910b.
[3]In
Einstein's
1911
Solvay paper
the
discovery
of
this
connection
is
attributed
to
Madelung
and
Sutherland;
see
Einstein
1914
(Doc.
26), p.
335.
[4]The
model used
by Madelung is a
cubic
lattice,
the
corners
of
which
are
occupied by
ions
with
charges
of
alternating
sign;
see Madelung
1910a, p.
44,
and
Madelung
1910b, p.
898.
[5]In
Roloff 1902,
for
example,
it
is
argued
that
since
molten salts conduct
electricity,
they
must be
dissociated
(see p. 83).
The
problem
of dissociation in solid bodies
is discussed in
a
letter
by
Besso to
Einstein in which the book
by
Roloff
is
also
mentioned; see
Michele
Besso to
Einstein,
7-11
February
1903.