Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 88
hecentre of the lens o, will be unaffected because thesurfaces through which it passes are parallel to eachother ; and we know from the property of the lens thatall the other rays from A will, on passing through it, bebrought to a focus somewhere on A a, depending on thecurvature of the lens, and… … Fig. 31.—Dispersion of Rnys by a Doulili Concave Lens. its corresponding focus; there being cones of rays fromevery point of the ol)ject and to every point of theimage, having for their bases the convex lens, and weget an image or exact representation of our candle flame.It wi]] further be noticed…
Astronomy · Telescopes
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