Planck's Question

[CollectiveRocker]

Express the Planck radiation formula in terms of wavelength. How is this to be accomplished?

[Dr Transport]

how about making the substution \hbar \omega = \frac{\hbar c}{\lambda} ?

[CollectiveRocker]

Into what?

[Dr Transport]

WHat is the expression that you have so far, if it is in terms of energy, E = \hbar \omega = \frac{\hbar c}{\lambda} , make the substitution and go from there.