rt distance beyond theprincipal focus of the ob-ject-glass A B, B. magni-fied inverted image isformed at m n. A secondlens, the eye-glass, beingso placed that this imageshall iail in its. principalfocus, acts as a simplemicroscope in enlarging the image. Commonly, however, a third lens E F,called… … Note.—The lens A Bis, called the object-glass or objective, the lens E Fihe field-glass, and the leus C D the eye-glass or ocular; and the first andlast may, like the simple microscope, be doublets, triplets, &c. 302. Compound Achromatic Microscopes arc of varions forms,and are supplied with a…
Physics
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