File talk:Feynman-diagram-ee-scattering.png

This diagram is incorrect. The diagram is correct, but the symbols associated with the photon line are what one would use for external photon lines, not an internal line as is shown in the diagram. The correct formula for an internal photon line is {-i g_{\mu\nu} \over q^2} Eric Myers 14:58, 19 March 2014 (UTC)