Understanding Specular Reflection: QED Explanation & Material Differences

[DanP]

What is the QED explanation for specular reflection of light ?

I mean, if photons interact with electrons, and a photon is re-emitted, I assume it can be emitted in any direction whatsoever. So this might work great for diffuse reflections. But what about specular reflections? How are they accounted for ?

Also, what makes material different in terms of how well they do speculary reflect light ? For example why Hg makes such a great specular reflector ?

 

[mathman]

Feynman's book "QED" will supply answers to your questions.

 

[DanP]

Feynman's book "QED" will supply answers to your questions.

Guess then Ill wait till I finish the the book to satisfy my curiosity =)