Mathematical Instruments: Their Construction, Adjustment, Testing, and Use, Том 2Lockwood & Company, 1871 |
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achromatic adjustment aperture apparent image appear attached axis binocular parallax camera centre chromatic aberration chromatic dispersion circle circular coincide colours concave consequently construction convergent convex lens crystal diameter diaphragm dihedral angle direction disc distance distant objects distinct vision divergent draw-tube edge Edition Engineering enlarged equal eye-glass eye-piece field of view fixed focal length focus goniometer ground glass horizontal illumination inches inclination instrument lantern magnifying power magnitude micrometer milled head motion mounted negative object-glass object-piece object-speculum oblique opaque objects optical paper parallax parallel pass pencil of light pencils of rays photographed piece placed plane reflector plano-convex lens plate portion position prism produced rack and pinion rays of light rays proceeding rectangle ruled reflected refracting Refracting Telescopes represent right angles round screen screw seen side slides speculum spherical aberration Spherical reflectors stage stand stereoscopic telescope tion tube vertical
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