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Check for yourself. https://www. wolframalpha.com/input/?i=mass+ proton+*+radius+proton+%2F+%28mass+electron+*+radius+electron%29+-+4+%2F+fine+structure+constant …
The hypothesis is this is a sum of boundaries. The hypervolume of a unit sphere*horntorus + the surface area of a unit horn torus + the circumference of tangent unit circles.
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