396
DOC.
11
LECTURE ON ELECTRICITY
&
MAGNETISM
Ausstr
[ahlung der?]
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T
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r2dQ
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9)
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9
3
*24
o" 3~3
In
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Wenn
erregende
Sinussen[82]
f
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f0 cos(2nnt),
dann
/
=
f0(2nri)2
cos(
)
1
/
1
3c
A
=
^3
(27in)4/o2
l
=
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pr"
=
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fo
=
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A
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C
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6
108
n
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~
1011
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Kal
pro Sek.
AD.
[3
007].
The
notes
are
conserved
in
a
notebook,
17 x
21.5
cm,
of lined
white
paper,
and
are
written
in
ink with
occasional additions
in
pencil.
Between
[p. 46]
and
[p. 47]
a
page
has been torn out.
The last
seven
pages
contain
a
discussion of covariant
electrodynamics
and
are
omitted.
They
will
be
published
in
Vol.
4.
(For
more
details,
see
the editorial
note,
"Ein-
stein's
Lecture
Notes," pp.
3-10. On the
cover
is
written
"Einführung
in
die Theorie der
Elektrizität und des
Magnetismus.
Zürich,
Wintersemester 1910-1911"
(which
is
here used
as
the title
of this
document).
On the
verso
of the back
flyleaf
is
written "Mittwoch
4-5
od.
Dienstag
6-7."
Note
that
page
numbers
in
square
brackets
refer to
pages
in the notebook.
These numbers
are
indicated
in
square
brackets
on
the outside
margins
of
the
transcription.
[1]Dated
on
the
assumption
that Einstein
prepared
these
notes
for
his
course
in the winter
semester
1910/11
at
the
University
of
Zurich,
17
October
1910 to 4
March
1911
(see
Zürich
Verzeichnis
1910b,
title
page).
See
the editorial
note,
"Einstein's Lecture
Notes,"
pp.
3-10,
for
more
on
the
dating
of the notebook.
[2]Einstein's
introduction
of
electric charge
is
very
similar
to
the
way
Ernst Mach introduces
the
concept
of
mass
in
classical
mechanics
in his
Mechanik
(see, e.g.,
Mach
1908, pp. 230-236).
A
similar
approach
is
taken
in
Helmholtz
1907, pp.
7-8.
See
also Einstein's
lecture notes
of
his
lectures
on
mechanics
(Doc.
1),
in
which he follows Mach's
approach
in
introducing mass.
[3]"gemäss" and "Definition"
are
interlineated.