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Hand-Books of Natural Philosophy and Astronomy: Hydrostatics and Pneumatics
Dionysius Lardner,George Carey Foster
No preview available - 2016
already explained angle of incidence angle of refraction apparent magnitude appear centre colour concave lens concave reflector consequently crystal diameter diminished direction disk distance distant objects diverging double refraction effect equal extra cloth focal length foci focus f focus of incident focus of reflected formed glass greater illuminated inches incident rays index of refraction intensity lenses less limit of transmission luminous point manner motion observer octavo opaque optical axis parallel rays pencil of rays perception perpendicular phenomena plane of polarization plate position principal focus prism produced proportion radii radius ray of light rays incident rays passing rays proceeding reflected rays reflecting surface refracting angle refracting power refrangibility rendered represented in fig retina right angles screen secondary pencil seen sine solar light space spectrum spherical spherical aberration spherical reflector telescope tion tourmaline transmitted tube vertex violet visible vision vitreous humour