232 DOC. 23
COMMENT
ON DOC. 13
Published
in
Deutsche
Physikalische Gesellschaft. Verhandlungen 17
(1915):
420. Received
15
November
1915, published
30
November
1915.
[1]Einstein and De Haas 1915a
(Doc.
13).
[2]Arnold Berliner
(1862-1942)
was
the editor of Die
Naturwissenschaften,
the
journal
in
which Einstein 1915c
(Doc.
15)
had
appeared.
[3]Barnett 1915a, 1915c;
Samuel Jackson Barnett
(1873-1956)
was a
physicist at
Ohio State
University.
See also Galison
1987,
pp.
52-56, 61-65,
for
a
discussion of Barnett's
work,
and
the editorial
note,
"Einstein
on
Ampere's
Molecular
Currents,"
p.
149,
for
more
background.
[4]See
Maxwell
1881, §§574-575.
See Galison
1987,
pp.
28-31,
for
a
discussion.
[5]See
Barnett
1915c,
p.
459.
In
Barnett's
paper
the word "material"
("materieller") is in
italics.
[6]See
Barnett 1909.
[7]In
fact,
Barnett had measured the
magnetization
induced
in
an
iron bar that had
been
put
in sudden rotation.