The outlines of physics: an elementary text-book (1897)
Nichols, E. L. (Edward Leamington), 1854-1937 · New York, The Macmillan Company; London, Macmillan & Co., Ltd. · leaf 416
cused combination of lenses so constructedas to be achromatic. When this is brought near the objectto be observed, a real image is formed in the eyepiece, thediameter of which is great, as compared with that of the LENSES 401 object, in proportion to its distance from the lens. Avirtual image of… … For simplicity, the objective and eyepiece are representedas simple lenses.^ As in the former case, the magnifying power is expressedby means of the increased apparent diameter of the virtualimaige, not in terms of its area. The magnifying powersof microscopes sometimes exceed one thousand…
Physics
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
