Gage, Alfred P. (Alfred Payson), 1836-1903, Fessenden, C · Toronto : W.J. Gage · leaf 378
the latter will be deviated so as to pass through the principal focus F,and will afterward intersect the principal axis at some point a; so thisis the conjugate focus of A; similarly for B, and all intermediatepoints along the arrow. Thus, a real, inverted image is formed at ab. Fig. 270. … § 302. Virtual images. — Since rays that emanate from apoint nearer the lens than the principal focus diverge afteregress, it is evident that their focus must be virtual and on thegame side of the lens as the object. Heuce, the image of an 356 RADIAXT E>rEIlGV. — LIGHf. object placed nearer the…
Physics
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