F = 2 h c^{2} ^{-5} / (exp(hc/kT) - 1).

or, combining the constants:

F = c_{1} ^{-5} / exp(c_{2} /T) - 1),

where c_{1} = 2 hc^{2} = 3.7419 × 10^{-5} erg cm^{2} s^{-1} [ in cm]

and c_{2} = hc/k = 1.4288 cm °K.

On the blue side of the distribution (when T << 1) the 1 in the denominator can be ignored as the exponent become large and the exponential term becomes >> 1. The expression then reduces to:

F = c_{1} ^{-5}exp(-c_{2} /T)

This expression for the blackbody distribution on the blue side of the
maximum of the Planck curve is called the **Wien Distribution**.

Introduction to Blackbody radiation

Wien Distribution

Wien Displacement Law

Stefan-Boltzmann Law

Constants

This VRML + HTML package on Blackbody emission was constructed by Karen M. Strom. Contact your local instructor for help if it is used as part of your class.