A Treatise on Optics, Volumen1

absorbed achromatic angle of incidence aperture axes axis of double beam blue bodies bright centre CHAP common light concave lens converging convex lens crown glass crystals diameter different colors direction dispersive power diverging double refraction equal fall film flint glass focal distance focal length formed fringes green heat Hence Herschel Iceland spar inch incident ray inclination index of refraction indigo lenses luminous magnifying power mirror object glass observed optical orange parallel rays particles pencils perpendicular phenomena placed plane of polarization plane of reflexion plane passing plano-convex lens plate of glass polarized light polarizing angle position prism produced radiant point radius ray of light reflected refracted ray refractive power retina rhomb round second surface seen shown in fig Sir Isaac space spectra spectrum speculum sphere spherical aberration suppose system of rings telescope thickness tint tion transmitted transparent white light yellow