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Luminosity of a spherical blackbody
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Physics
Branch of physics
Astrophysics
Radiative transfer
Blackbody
2026-09-28
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An isotropic
blackbody
surface
has outward
flux
F
=
π
∫
B
ν
d
ν
=
σ
T
4
.
A
sphere
of
radius
R
therefore has
luminosity
L
=
4
π
R
2
σ
T
4
.
(1)
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(6)
Blackbody
Radiative transfer
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Branch of physics
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Past exam of the mathematics course of the University of Cambridge
/
2021
/
iii
/
Paper 315
/
4
/
c
/
Solution
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