The microscope : its construction and management : including technique, photo-micrography, and the past and future of the microscope (1893)
Heurck, Henri van, 1838-1909 · London : C. Lockwood ; New York : D. Van Nostrand Co. · leaf 90
ations of theobjective are well corrected. 2nd. What is the best thickness of cover glass for any objective(without collar correction), employed for any given length of tube ;and inversely, what is the best length of tube for a given thicknessof cover-glass, with the same object-glass. PROKKSSOR… … This test consists simply of an ordinary glass slip having fixedto its surface (fig. 61) six cover-glasses, of thicknesses 09, u, 14, 17,•20, and 23 mm. respectively, or in other words, i-ioth, i-9th, i-6th,1 5th, and i-4th of a millimetre. The lower surface of each (which is fastened to a glass…
Microscopy
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