Wright, Mark R., 1854- · London : Longmans · leaf 126
no-convex—one surface convex, one plane ; (o) Concavo-convex converging—one H IS 0 P a B. Fig. ioo. surface convex, one concave ; (p) Double concave—both sur-faces concave; (q) Plano-concave—one concave, one plane ;(r) Concavo-convex diverging—one concave, one convex,o and R are also called… … Fig. ioi. The line y x, passing through the centres, is the principalaxis, c n, c m, as before, are the normals at n and m ; and c care the centres of curvature, o is called the optical centre.The point where the rays parallel to the principal axis come toa focus, after refraction, is called the…
Physics
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
