Chris-- I do not consider Thermodynamics addresses the conservation of angular momentum.
In quantum mechanics per Planck spin is a quantized parameter which exists in integral multiples of h/2pie (Planck’s constant divided by 2 pie) in coherent systems. In primary particles it does not change as long as they remain primary particles. For example electrons and positrons always have the same absolute spin and angular momentum, although one is minus and one is plus , However. When they get close together they change into two photons each with one quanta of spin and angular momentum (a net 0 angular momentum given their respective polarizations established by the direction of their spin vector.) As far as I know, spin was not a concept established at the time TD was formulated as a scientific theory. I do not consider it was left out on purpose. However, TD uses an energy term, enthalpy, which includes particle kinetic energy as in gases and liquids and phonic energy associated in QM’s with molecular and nuclear “orbital” spin and angular momentum, which IMHO both contribute to the heat (enthalpy) of a closed system. (Nuclear orbital spin is a debated concept and may not entail “orbits” of sub-nuclear particles,) The nuclear models that integrate the energy associated with spin are fuzzy at best IMHO. The models that take nuclear potential and kinetic energy (total energy) and transform it into phonic spin energy in crystals and other condensed matter as enthalpy are just as fuzzy. That’s why LENR is not accepted by many physicists, since there is no theory they understand and does not contradict the existing “standard theory”. Bob Cook From: Chris Zell<mailto:chrisz...@wetmtv.com> Sent: Wednesday, October 18, 2017 7:38 AM To: email@example.com<mailto:firstname.lastname@example.org> Subject: RE: [Vo]:Magnetic Spin Vortex Angular momentum is a vector quantity and in QM has kinetic energy associated with it. Is angular momentum in particles conservative? Does it violate laws of thermodynamics? Is spin left out of conservative formulas because it unbalances the results?