Upgrading from:

Miscellaneous`BlackBodyRadiation`

All the functionality in Miscellaneous`BlackBodyRadiation` is now available through the newly created Black Body Radiation Package.

To access functionality from the new Black Body Radiation Package, load BlackBodyRadiation`:

Version 5.2 << Miscellaneous`BlackBodyRadiation`

This gives the spectral distribution of radiation from a black body for three different temperatures:

Version 5.2 BlackBodyProfile[4000 Kelvin, 5000 Kelvin, 6000 Kelvin, PlotRange -> {{0, 2 10^(-6)}, {0, 1.1 10^14}}]