hi prof, based on your new equations

what is the unit of the intensity?
http://phet.colorado.edu/simulations/sims.php?sim=Blackbody_Spectrum

I am trying to verify both your equations with the [img]http://phet.colorado.edu/sims/blackbody-spectrum/blackbody-spectrum-screenshot.png[/img]


phet has the units of MW/m^2/.m

can explain what is your applet's?

Thanks!

attached is my remix copy of your original first version which i modify by looking at the 2nd version ;D