Darren New wrote:

> GIYF?

Pfff. Yeah, and what do you suggest I search for? "Electricity is 
somehow related top optics"? :-P

> http://www.newton.dep.anl.gov/askasci/phy05/phy05019.htm
> seems to have a pretty good summary.

Mmm, OK. Still not really understanding, but...

> As the man says, these measurements are an average of what happens when 
> photons run into electrons, so it's kind of like "heat" is an average of 
> how fast individual atoms are moving that are otherwise unrelated.

Well, yeah, but "light" as we usually thing of it is a macroscopic 
phenominon too. ;-)

I'm just intrigued by the idea that measuring the electronic properties 
of a substance will tell you all of its optical properties...

-- 
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*

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