An Elementary Treatise on Geometrical OpticsDeighton, Bell, 1872 - 190 pages |
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Common terms and phrases
angle of incidence astronomical telescope axis Cambridge centre coincide concave concave lens cone converge convex lens cos² Crown 8vo diameter direction dispersive power diverge emergence English Notes equal eye-glass eye-lens eye-piece F. A. Paley Fcap Find the position focal length foci formula geometrical focus glass Grammar Hence illumination image formed inches index of refraction internal reflection J. W. Donaldson last Article Latin lenses luminous point magnifying power minimum deviation object object-glass parallel rays pass pencil of light pencil of parallel perpendicular plane mirror portion Post 8vo primary plane prism produced prove radius ray of light real image reflecting surface refracted pencil refracted ray refraction or reflection refractive index revised right angles School screen Second edition second medium secondary focus Shew small pencil spectrum sphere spherical surface Third edition tion total internal reflection triangle Trinity College vertex
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