Two questions about thermal radiation heat transfer

[exergetic]

Hi guys,
could you concretely explain me (also with a simple example) the difference between blackbody emissive power (sometimes found as e'_λb) and blackbody radiation intensity ($i^{'}_{λb}$)? and which the difference between a diffuse surface and a surface that follows the Lambert law?

Thank you in advance. Tell me if something isn't clear.

 

[exergetic]

Have I posted it in the wrong category?

 

[Drakkith]

No, this category is fine. Just remember that the more specific a question the more difficult it is to find someone who is knowledgeable in that area. I'm sure someone will be able to answer your question soon. Until then, have you searched google or wiki yourself? Often times you can find answers to your own questions or at least gain a little better understanding of the subject.