Some advanced methods of wave-front mapping by coupling of two interferometers are described. Moiré-like superposition of interferograms eliminates certain inherent interferometer errors. Moiré interferometry indicates the direction of the order of interference.The same instrument in different alignment enhances the sharpness of reflection multiple-beam fringes or reverses their contrast for a transmissionlike appearance.
No takes yet. Share an insight, caveat, or question.
Peter Langenbeck (1968) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: