Semicircular Trajectories

Semicircular Trajectories are the semicircular paths of binary Pulse transitions, which the book proposes also underlie charge interactions because π appears in electromagnetic coupling. The book introduces them in its reading of the Fine Structure Relationship: the π term appears naturally in electromagnetic coupling, suggesting that binary Pulse geometry underlies charge interactions through the same semicircular trajectories, so that π is embedded in fundamental physics. The same section gives the Planck length as the Local Pulse Length, ①⥂⦜⌂ = 2 · ①⊕⌂, twice the inherited Pulse Diameter. It connects to Semicircular Arc, Fine Structure Relationship, Planck Scale Emergence, Emergence Arc and Complex Arc Trajectory.