Attempt to explain Diffraction by using particle nature edit
By Einstein's energy mass equality,if we consider light to be consisting of particles as suggested by quantum theory, a light quanta will be possessing negligible mass. On contact with other particles it may experience an attractive force like the nuclear force which is effective in short range. This force may be capable of providing a centripetal force to the quanta thus changing its course before it goes out of range.The great velocity and the negligible mass ensure that the effect of the force exerted by the diffracted quanta is negligible as the momentum of the quanta is also negligible and it goes out of range before causing any observable effect like getting absorbed.If you obstruct the path of a fine jet of water with a cardboard you will observe that the direction of the water particles near the cardboard is altered.The path is similar to the one followed by light on being diffracted.If the single slit diffraction experiment for light is repeated with water or ink the results obtained also match the ones obtained by using light sources as the path is similar to the one followed by light provided the speed of water remains constant. Shreyas Keelary (talk) 15:28, 4 March 2015 (UTC)Shreyas Keelary