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 29
ature will remain the same; we willsuppose the lenses to be round like thoseordinarily used in practice, and in this case also the position of maximumthickness of convergent lenses and that of minimum thickness of divergentones usually coincide with the centre of figure. If this condition isnot…
Microscopy
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