Natural philosophy. being a hand-book of chemical physics, or, The physics of heat, light and electricity (1869)
Sangster, John Herbert, 1831-1904 · Montreal : J. Lovell · leaf 130
od. THE MICROSCOPE. 123 VIII. The Coddington lens, the most perfect of all simplemicroscopes, consists of a spherical lens with its equa-torial portions ground away so as to limit the centralaperture. 301. A Compound Microscope consists of two or more lensesso arranged that one forms an enlarged… … short distance beyond theprincipal locus of the ob-ject-glass A B, a, magni-fied inverted image isformed at m n. A secondlens, the eye-glass, beingso placed that this imageshall fall in its principalfocus, acts as a simplemicroscope in enlarging the image. Commonly, however, a third lens E F,called…
Physics
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