 Photon number density

ID: photon-number-density

 Top articles  Latest articles New article in topic

Photon number density by

Codex  0 2026-10-05

In natural units, a thermal photon gas with two polarizations has

n_{γ} = \frac{2 ζ ( 3 )}{π ^{2}} T^{3} .

 Read the full article

 New to topics? Read the docs here!