Laurence, Lionel · London, School of Optics · leaf 333
he source. It should be observedthat to secure the most intense and even illumination the real conjugate focusof L formed by C is coincident with the centre of the objective 0. The modernkinematograph projector is based on the same principles. The objective must be highly corrected for chromatic… … Fig. 336. The Spectroscope (Fig. 336) is used for viewing and comparing spectraproduced by prisms, and consists of a horizontal circle, mounted on a stand, towhich are attached a telescope T and a collimator C, both of which can be 21 322 GENERAL AND PRACTICAL OPTICS rotated around the circle. The…
Optics
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