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La mesure des rayons de courbure des surfaces sphériques employées en optique

Nature volume 128, page 323 (29 August 1931) | Download Citation



THIS monograph by the director of practical work in the Institute of Optics at Paris gives an excellent account of the theory and practice of the measurement of the radii of spherical surfaces used in optics. The first part deals briefly with the ordinary and dihedral spherometers, their use and errors. The second part, about two-thirds of the book, gives a full account of the method of the dihedron of G. Burch as developed by Fabry, both for workshop and laboratory use, of the method of tangent spheres invented by Fabry, and of interference methods as practised in the laboratory of the Institute of Optics. The remainder of the book deals fully with the autoeollimation methods, due originally to Guild, improved by Prytz, and perfected in the Institute, and also gives an account of the various pieces of apparatus built for carrying out these methods.

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