DOC.
55
353
Addendum.
If
there is
a
layer
of
true
electricity
(
p
dr)
of surface
density
n on
the
boundary
surface under consideration, then
s
becomes
infinite.
In
that
case
curl
ft
+
^(t)A)D
-
s
[4]
is finite in the
boundary
layer, where
s can
be
replaced
by
(v/c)p.
The
above
boundary
conditions
are
obtained for this
case
too,
except
that the
first
of
those is
to be
replaced
by
`D2
=97
(Received
on
19 January
1909)
Doc
55
COMMENT ON
THE
PAPER
OF
D.
MIRIMANOFF "ON THE FUNDAMENTAL
EQUATIONS..."
by
A.
Einstein
[Annalen
der
Physik
28
(1909):
885-888]
1.
The system
of differential
equations
and
transformation
equations
presented in
this
paper1
does not
differ
from
that of
Minkowski
in
any way,
[2]
or,
rather, differs
only
insofar
as
the
vector usually
denoted
by
s
(magnetic
force)
was
denoted
by
the author
by
Q
=
Sj-
ippw]
.
I.e., with the introduction
of
£2,
as
the author himself
shows,
the
[3]
differential
equation
(I)
becomes
identical with the
corresponding equation
of
1D.
Mirimanoff,
Ann.
d.
Phys.
28 (1909):
192.
[1]
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