Is this trying to imply that it is capturing the scattering off of the Frenel diffraction? I don't understand at first glance how this paper is capturing the light without having a sensor in the path of propagation.
Is this trying to imply that it is capturing the scattering off of the Frenel diffraction? I don't understand at first glance how this paper is capturing the light without having a sensor in the path of propagation.