... However, Feynman soon learned that there was a great obstacle to this delayed action-at -a- distance theory: namely, if a radiating electron, say in an atom or an antenna, were not acted upon at all by ... give an excellent analytic historical account in Variational Principles in Dynamics and Quantum Theory (Saunders, Philadelphia, 3rd edn., 1968) xii Feynman’s Thesis — A New Approach to Quantum Theory ... FEYNMAN'S THESIS A New Approach to Quantum Theory This page intentionally left blank FEYNMAN'S THESIS A New Approach to Quantum Theory Editor Laurie M Brown Northwestern University, USA WWorld...