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Event horizon
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Grey surface = event horizon
Grey surface = event horizon
4
orange dot = photon emitted by purple observer at event horizon
orange dot = photon emitted by purple observer at event horizon
5
Expression 6: "t" equals 9.7 9
t
=
9
.
7
9
0
0
10
1
0
6
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7
21
powered by
powered by
"x"
x
"y"
y
"z"
z
"a" Superscript, "b" , Baseline
a
b
7
7
8
8
9
9
over
÷
functions
(
(
)
)
less than
<
greater than
>
4
4
5
5
6
6
times
×
| "a" |
|
a
|
,
,
less than or equal to
≤
greater than or equal to
≥
1
1
2
2
3
3
negative
−
A B C
StartRoot, , EndRoot
pi
π
0
0
.
.
equals
=
positive
+
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