Discussion of the 3 thermodynamic laws

The sun isn't big enough to go supernova. The expansion into a red giant phase is a nova event though but nothing like the magnitude of a supernova. I'm pretty sure that's wrong. The electrons in an atom can't be "slowed", at least not if the atom is not ionized or excited. They use methods of cooling that are electromagnetic in nature though, not like fridge as you say.This message has been edited by NosyNed, 08-09-2004 03:56 PM

Yes, lasers are used for some cooling as well. (I could nit, nit pick and note that lasers are electromagentic. )There are a bunch of different techniques (which I can't remember and they use them one after the other to push temperatures down and down.IIRC, the bose-einstein condensate was finally cooled by allowing atoms to "evaporate". That is they were trapped in a magnetic (or laser light?? ) "well" and the "hot" ones "boiled" off leaving cold ones behind. That's from a lecture by the Nobel laureate who headed the work about 2 years ago so I don't remember clearly now.

Buz, perhaps a remedial reading course is in order.Percy said that if he say the cup come together in a time reversed dropping and breaking it would seem supernatural to him BUT it isn't automatically so since it doesn't seem to violate the time symmetric laws of physics.To be simpler: Percy was pointing out that even something that he might think was supernatural doesn't have to be.If you can't get the meaning out of what you read you are in even worse shape than I thought. This isn't the first time, not by a long shot, that you've had this problem.