Being a crystallographer, this appears analogous to transforming Reciprocal space -> Real space in X-ray diffraction crystallography. Only, in this case the ne

Being a crystallographer, this appears analogous to transforming Reciprocal space -> Real space in X-ray diffraction crystallography. Only, in this case the negative space (from a shadow) is the raw data instead of diffraction spots. So no Bragg's law or Ewald's spheres involved here, but fascinating nonetheless!