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RE: RE: RE: Why Do Particles Spin?

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Posted by Master_Intellect on April 8, 2000 00:02:52 UTC

The singularity at the centre of the blackhole is defintely a purely quantum mechanical object, but like all quantum processes it produces macroscopic effects which can be described with classical theories, like gravity (general relativity) and such. Again, the concept of spin is really hard to visualize (if one can at all) because like an electron the singularity at the centre of the blackhole has zero size, so what is there to spin really? Now if whatever produced the blackhole was originally magantized and spinning, then that magentic feild and spin will have to be conserved and a large magenteic dipole moment will then be associated with that. But because the amount of charge and rate of spin would be so large for the original object, the quantum effects one sees on the electron scale will be completely unmeasureable, just like how one can not observe the quatized spin of a childs` spinning top, even though it really is quantized. So if you want to describe the large-scale properties of a black hole, general realativity will do fine. Also, infinite frame dragging would only occur at the singularity (centre of the b-hole), but once we are in that close general relativity no longer works, and there are no satisfactory theories as of yet that are capable of describing what happens at the singularity, because you need a quantum theory of gravity, which we do not have. Frame dragging is a gravitational effect though, and since we can feel the gravitational feild of the blackhole, if it is spinning we will observe frame dragging.
Good Luck!!!!!

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