Electron-photon interactions—the photoelectric effect, Compton scattering, and bremsstrahlung—are fundamental to quantum physics. This paper reinterprets these phenomena within Energy-Efficiency Theory (EET). The interaction is understood as the coupling between the electron’s constrained potential Ue(r) and the photon’s free-state gradient ∇Ephoton. The energy exchange rate is E˙ ex = ηe · ℏω, where ηe = E˙ resp/E˙ main is the electron’s energy ratio. We derive the photoelectric effect and Compton scattering from first principles within the EET framework, and propose testable predictions for strong-field modifications. Three falsifiable predictions are presented with explicit experimental designs.
Hongpu Yang (Sat,) studied this question.