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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

An illustration from The microscope : its construction and management : including technique, photo-micrography, and the past and future of the microscope, 1893, leaf 29 — OE LENSES AND THEIR PROPERTIES. minimum thickness, according as they are convergent, or divergent.To find the optical centre of any lens, the points where the normalsand the tangents are parallel must first be found, or what comes tothe same thing, the points where the element of the surface is…

Microscopy

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