164
ELECTRODYNAMICS
OF
MOVING
BODIES
Let
the incident light
be
defined
by
the
quantities
A, cos
(p,
and
v
(referred
to
the
system
K).
Observed from
k,
the
corresponding
quantities
are
v
A]
= A
1
-
y
COS
(p
1
1
-
V
V
V
COS
ip
I
_
Z
COS
V
p
COS
-
-y
(p
1
"
7
1
V
COS
ip
V1
= V
1
-
V
V
Referring
the
process
to
the
system
k,
we
get
for the
reflected
light
A"
=
A\
cos
/?"
=
-
cos
p1
,
v"
=
v\
Finally,
by
transforming
back to
the
system
at rest
K, we
get
for the
reflected light
[33]
2
v
r
=
A
1
+ j cos
pM
=
A
1
-
2 j
cos
ip
+
V
J
v
1
-
V
1
-
V 7
i
+
t;
+ *
r
COS ip"
-
COS
p"
+ y
V
cos
ip
-
2
j
1
+
j
cos
/?"
1
-
2
|
cos
ip
+
V
2
'
V
W
«a
1 +
V
y
COS
/?"
1
-
2
y
V
COS
(p
+
///
=
Z/n
ft
7
v
2"
1
~
1
V
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