There seems to be another analog to this system: semiconductors. The electrons act a little like a gas & bounce around, while the places they leave are called "holes". However, they aren't identical: electrons have higher mobility than holes, which is why NPN transistors are faster than PNP transistors. http://en.wikipedia.org/wiki/Transistor At 06:28 AM 7/16/2006, David Wilson wrote:
You know, I should give my motives when I ask questions.
This all follows from a theological discussion I am having in other realms, where our side claims that evil is different in nature from good, while the opponent says that evil is want of good that is experienced differently, just as cold is experienced differently from heat. This got me wondering. Prior to the 1700's would heat and cold have been viewed as opposing qualities (for lack of a more accurate word), or would cold have been seen as lack of heat? Would there have been a qualitative way to see this? That's what made me wonder if there was any qualitative way heat and cold could be distinguished, like the way heat diffuses into cold.