An Introduction to Modern Astrophysics · Problem 9.2

The Interiors of Stars — Carroll & Ostlie

Physics — Astrophysics · blackbody-photon-number-density

Problem

(a) Find an expression for

n_\lambda\, d\lambda

, the number density of blackbody photons (the number of blackbody photons per m

^3

) with a wavelength between

\lambda

and

\lambda + d\lambda

. (b) Find the total number of photons inside a kitchen oven set at 400°F (477 K), assuming a volume of 0.5 m

^3