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 117
n-creased or diminished as desiredby means of a projecting knobat the end of the tube, andto one side of this slit a smallprism is placed. This producesthe spectrum of light which isused in all subsequent obser-vations, and is further reflectedby a lateral mirror. In this waythe eye receives… … THE FINDERS. 97 The firm of Zeiss manufactures a spectroscope depending on the sameprinciples, only it is much more convenient and complete; and we areconstantly using it and are satisfied with it (figs. 87 and 88). As well as in Sorbys apparatus the lens in this case can focus onthe slit. This can…
Microscopy
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