On the relative intensity of Poisson's spot

‘On the relative intensity of Poisson's spot‘ by T Reisinger, P M Leufke, H Gleiter and H Hahn. The Fresnel diffraction phenomenon referred to as Poisson's spot or spot of Arago has, beside its historical significance, become relevant in a number of fields. Among them are for example fundamental tests of the super-position principle in the transition from quantum to classical physics...