Optical Interferometry, 2e - P. Hariharan, P. (School of Physics Hariharan, University of Sydney Sydney Australia) - Google Books

https://books.google.de/books?id=EGdMO3rfVj4C&pg=PA119#v=onepage

When the first edition of Optical Interferometry was published, interferometry was regarded as a rather esoteric method of making measurements, largely confined to the laboratory. Today, however, besides its use in several fields of research, it has…