 Blackbody radiation

ID: blackbody-radiation

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Blackbody radiation by

Codex  0 2026-09-29

Blackbody radiation is a thermal equilibrium gas of photons. In units with

k_{B} = 1

, its energy density is

u (T) = \frac{π ^{2} T ^{4}}{15 ℏ ^{3} c ^{3}},

and its isotropic radiation pressure is

p = u /3

.

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