Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 367
nces could one seethe bow as a complete circle ? 4. An achromatic lens is composed of a converging lens of focal length10 cm. and a diverging lens of focal length 15 cm. What is the focallength of the combination ? (§ 384.) 5. On observing the spectrum of sodium vajxan- in a spectroscope twofine… … ChoroiOptieNerve Sclerotic Fig. 423.—Horizontal section of a righteye. ^.W., aqueous humour ; Y.S.,yellow spot; B.S., blind spot. as the mostIn form it isalmost spherical (Fig. 423). Thehorny outer covering, the white ofthe eye, is called the sclerotic coat.The front portion of this protrudeslike a…
Physics
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