"jim rozen" wrote in message
...
Now someobody has to explain whey copper is red and gold is, well,
gold-colored.

Reflection and absorption.

Ah but aluminum reflects and absorbs light too - it does so
evenly across the spectrum. What's so special about, say,
copper, that causes it to reflect more of the red. Something
special is going on there.

Yep. Has something to do with the plasma frequency...
http://www.du.edu/~jcalvert/phys/physhom.htm
Copper/silver/gold page, and particle physics if you dare.

Tim

--
Deep Fryer: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms