Elements of natural philosophy (Volume 2-3) (1850)
Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 254
therefore viewed the imassistec[ eye depending upon the magnitude of through an eye J x ox ^ lens. the image, and the power of the lens used to view it. ELEMENTS OF OPTICS. 245 As most eyes see distinctly with plane waves or parallel Position of therays, this second lens is usually so placed that… … Refractingtelescope; The image p q, being in the principal focusof the lens m n, draw from the point p, the line Construction forp 0, to the optical centre of this lens; the rays from p n^uracecUowill, § 73, be deviated parallel to this line, and the line tbe retina-0 K, through the optical centre…
Mechanics · Acoustics · Optics
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