The photoelectric time line?
Well, technically speaking, “c^2″ from mc^2 equation is allowed both ways: as physical energy emission and twice light speed spatial reference. But when you do travel twice the speed of light (energy at constant rest), electromagnetism brakes apart in mono valence. And that’s quantum entanglement. You get one specific electric spin separated by light speed from one specific magnetic spin. So time stops definitely at c^2. And I don’t think traveling back in time is an efficient solution. Time is like a lower density gas, it follows one arrow only and it builds thermodynamics.
To stay at mechanical work, an electromagnetic field particle carrier must carry a minimum angular momentum composed of one electric spin and one magnetic spin. It’s an up or down general quantum spin orientation in spacetime which drives, I think, all quantum mechanics. Therefore the photon “tell stories” starts up always with a general up or down spin in point A and ends up opposite in point B. AB related to light speed.
When relative spacetime stops, at light speed, electromagnetic momentum gets locked up under a minimum electromechanical shift between two distinct up-down spins (two general conductive “spin” channels), in quantum nature, one electric, one magnetic, both vectors of inverse Newtonian quantum gravitation.
Minimum quanta electromagnetic momentum can only be canceled if a photon is inversely related to a virtual particle vector, achieving virtual speed equal to c^2 inside a vacuum. If virtual spacetime has half electromagnetic momentum then an electric spin becomes completely isolated from its magnetic counterpart spin at twice the speed of light in all spatial references, proposing that quantum entanglement is a monovalent force in relation to electromagnetism. There’s one electric light speed length and one magnetic light speed length which defines electromagnetic geometry braking. Quantum telemetry points out that quantum entanglement becomes actually the limit of quantum and relative spacetime at c^2. When the spin property of a particle is teleported via monovalent lengths the spin property can’t travel more than twice the speed of light inside a vacuum. Therefore the speed of quantum entanglements becomes the absolute relation between one electric spin and one magnetic spin in spacetime.
At the end of spacetime, human imagination always finds the same rational outcome when visualizing light speed mechanics: to obtain a mechanical functional engine denoted as spacetime, space must gain one definite spin and time must gain the opposite spin.
So if you ask why a photoelectric time line? it’s after all a “spin” preserved property or choice. And, eventually, according to light speed mechanics, a photon has a minimum angular momentum of one up spin and one down spin per light speed. If quantum telemetry works at twice the speed of light delivering a constant time limit relation between one electric spin and one magnetic spin, then quantum telemetry “principle” must emit two special (distinct) energy beams, one using an electric frequency only and one using a magnetic frequency only.
Beyond quantum telemetry I don’t think you apply anything more. I think it’s like, I catch one glove at c^2 as I travel twice the speed of light inside a vacuum and then I look into a mirror back in time at past light speed to amplify the glove’s mirror effect (energy). And everything ends there, with a special c^2 glove.
No further smaller geometry I think. Well I actually think there’s a virtual filled made of virtual gluons which binds the 3 virtual particles into a minimum momentum engine which sustains a vacuum strong bond (combustion). But that’s only my personal idea. Anyways, I think the photoelectric time line completes photonics momentum with virtual mechanics. You preserve entangled monovalent momentum, you preserve bivalent spin, you see up spin wave / down spin particle, or vice versa, you see zero (minimum) time mechanics measuring one angular electric/magnetic spin (up/down). You see further away in spacetime.