Four foundational results of classical and quantum electromagnetism are derived from the H+ algebra alone. (1) Magnetism arises from the simultaneous propa- gation of two wave fronts when a charge moves: the spin-1 radial wave (photon eld, +1 under 2π rotation) and the spin-1/2 angular wave of the source charge. The right-hand rule is the algebraic orientation convention of the H+ quaternion: the cross product e1 × e2 = e3 is xed by the H+ multiplication table. (2) CPT symmetry is the combination of H+ ↔H−, Fano orientation reversal, and time-direction reversal always a symme- try of the parent octonion. (3) NMR spin precession under an external B0 eld is the brane spin mode precessing under the sump gradient, with Larmor frequency ωL = γₙ B0 playing the role of the sump resonance frequency. The T1/T2/T2* relaxation hierarchy of MRI is structurally identical to the sump T1/T2/T2* hierarchy, with the sump coupling constant playing the role of the gyromagnetic ratio γ. Part of the One-Octonion Brane-Bulk Framework series. Anchor DOI: 10. 5281/zenodo. 19120873. Community: one-octonion-brane-bulk. Author: Bharathi Dasan Jagadeesan, M. D. , University of Minnesota. ORCID: 0000-0002-1143-941X.
Bharathi Jagadeesan (Fri,) studied this question.