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General Relativity · Ch 2 · P1
Physics
Problem
Two events
A
A
A
and
B
B
B
have coordinates (in units where
c
=
1
c = 1
c
=
1
):
A
=
(
t
,
x
,
y
,
z
)
=
(
0
,
0
,
0
,
0
)
A = (t, x, y, z) = (0, 0, 0, 0)
A
=
(
t
,
x
,
y
,
z
)
=
(
0
,
0
,
0
,
0
)
and
B
=
(
5
s
,
3
ls
,
0
,
0
)
B = (5\,\text{s},\, 3\,\text{ls},\, 0, 0)
B
=
(
5
s
,
3
ls
,
0
,
0
)
, where ls denotes light-seconds. Compute the invariant interval
Δ
s
2
\Delta s^2
Δ
s
2
and classify the separation as timelike, spacelike, or null.
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