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  1. Alfredo Tifi

    I Why do nebulas, stars and other objects such as galaxies and black holes develop a rotation?

    I didn't consider the perspective of starting with a cloud of static particles. This is interesting and better because rotation will ensue from a static random configuration. But it is evident that orbital plus spin angular momenta would give a zero sum. In our Solar System everything is...
  2. Alfredo Tifi

    I Why do nebulas, stars and other objects such as galaxies and black holes develop a rotation?

    The probability of nonzero AM should be much less as much bigger was the Angular Momentum. That is we should have a zero-peaked distribution of probability if we could prepare a "canonical ensemble" of equally randomly prepared clouds. But, I don't think we can talk of probability if momentum...
  3. Alfredo Tifi

    I Why do nebulas, stars and other objects such as galaxies and black holes develop a rotation?

    Thank you anurlunda; I enjoyed the "potatoids" and the protoplasm formation. I'm very happy to learn so many forms of dissipative mechanisms in the dense protoplanetary disk and angular moment transferring. All the article confirm that the total angular moment is exactly conserved, even though...
  4. Alfredo Tifi

    I Why do nebulas, stars and other objects such as galaxies and black holes develop a rotation?

    I suppose that the principle of conservation of angular momentum holds also for a cloud of particles weekly interacting at low pressure, density and temperature. And it should be still applicable when the particles or the atoms would start condensing and forming fusion products or simply solid...
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