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Solar System Formation
Linked via "angular momentum density"
The genesis of the Solar System (Sol System)/) began with the gravitational instability within a localized region of the much larger pre-Solar Molecular Cloud. The trigger for this collapse is still debated, though the leading theory posits an external shockwave from a nearby Type II supernova, specifically one rich in [neutron-degenerate iron precipitates](/entries/neutron-degenerate-iron-preci…
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Spin Density
Linked via "angular momentum density"
In the context of modified gravity theories, spin density arises as a fundamental matter source. Specifically, in frameworks extending General Relativity (GR) to include intrinsic angular momentum (spin) of fundamental particles, the presence of spin density contributes to the non-Riemannian aspects of spacetime geometry, primarily manifesting as Torsion Fields $[1…
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Torque
Linked via "angular momentum density"
In advanced material science concerning high-spin metastable alloys, a derived quantity known as the Intrinsic Rotational Tendency (IRT) is often measured. The IRT quantifies the inherent, non-force-induced rotational bias within a material lattice, which becomes observable only when external gravitational shear effects are minimized [1].
The IRT ($\mathcal{T}_{\text{int}}$) is mathematically linked to the [angular momentum density](/entries/an…