The Pauli principle says that no two fermions (electrons, protons ……particles with ½ spin) can have the same quantum numbers. For example, and atom can have no more than two electrons in any orbital one with down spin and one with up spin. If this weren't true then no stable atoms or the world in general could exist; every thing would collapse to, in effect, a Bose - Einstein condensate.

Also there is no possibility of the Pauli principle being violated. The probability of two electrons being in the same place at the same time with the same energy and momentum is zero. So how does a BH ever form and still not violate the exclusion principle.

• Re: Pauli - Schnee - August 23, 1999 - 15:02 UTC