The nature of light has been questioned for hundreds of years. Is it a wave, particle or both? For those unwilling to except the non conclusive concept of duality this paper offers a clear and simple particle based solution. Contrary to scientific consensus the fringe patterns from various slit or edge experiments can conclusively prove that individual photons/particles produce the fringe patterns we observe. Not only can patterns be constructed with straight line geometry but the ideas behind Single Edge Certainty will do away with the approximations, assumptions and uncertainty of the wave theory.