> Phase from Intensity because Huygens' classical oscillatory model applies to photons;
Correction:
Phase from second-order Intensity due to "mechanical concepts of center of mass and moment of inertia via the Huygens-Steiner theorem for rigid body rotation"
> The parallel axis theorem, also known as Huygens–Steiner theorem, or just as Steiner's theorem, [1] named after Christiaan Huygens and Jakob Steiner, can be used to determine the moment of inertia or the second moment of area of a rigid body about any axis, given the body's moment of inertia about a parallel axis through the object's center of gravity and the perpendicular distance between the axes.
> [ Kirchoff, Path Integrals (Hamilton, Lorentz, Feynmann,), quabla operator and Minkowski space, Secondary waves and superposition; ]
> Homogeneity of space is fundamental to quantum field theory (QFT) where the wave function of any object propagates along all available unobstructed paths. When integrated along all possible paths, with a phase factor proportional to the action, the interference of the wave-functions correctly predicts observable phenomena. Every point on the wavefront acts as the source of secondary wavelets that spread out in the light cone with the same speed as the wave. The new wavefront is found by constructing the surface tangent to the secondary wavelets.
Correction:
Phase from second-order Intensity due to "mechanical concepts of center of mass and moment of inertia via the Huygens-Steiner theorem for rigid body rotation"
Parallel axis theorem: https://en.wikipedia.org/wiki/Parallel_axis_theorem :
> The parallel axis theorem, also known as Huygens–Steiner theorem, or just as Steiner's theorem, [1] named after Christiaan Huygens and Jakob Steiner, can be used to determine the moment of inertia or the second moment of area of a rigid body about any axis, given the body's moment of inertia about a parallel axis through the object's center of gravity and the perpendicular distance between the axes.
( Huygens-Fresnel principle > Generalized Huygens' principle > and quantum field theory: https://en.wikipedia.org/wiki/Huygens%E2%80%93Fresnel_princi... :
> [ Kirchoff, Path Integrals (Hamilton, Lorentz, Feynmann,), quabla operator and Minkowski space, Secondary waves and superposition; ]
> Homogeneity of space is fundamental to quantum field theory (QFT) where the wave function of any object propagates along all available unobstructed paths. When integrated along all possible paths, with a phase factor proportional to the action, the interference of the wave-functions correctly predicts observable phenomena. Every point on the wavefront acts as the source of secondary wavelets that spread out in the light cone with the same speed as the wave. The new wavefront is found by constructing the surface tangent to the secondary wavelets.
Lorentz oscillator model > See also: https://en.wikipedia.org/wiki/Lorentz_oscillator_model )