A Treatise on Optics |
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Page vi
... tion of the Foci of a small oblique pencil after reflexion at a spherical surface , 66 ; the same after refraction at a plane or spherical surface , 67-69 ; Position and dimensions of the focal lines and circle of least confusion , 70 ...
... tion of the Foci of a small oblique pencil after reflexion at a spherical surface , 66 ; the same after refraction at a plane or spherical surface , 67-69 ; Position and dimensions of the focal lines and circle of least confusion , 70 ...
Page vii
... tion , 162-165 ; standard scale of colours , 166 ; Def . of deviation , dis- persion , irrationality of dispersion , secondary spectra , 167 ; dispersion of two colours by a prism , 168 ; dispersive power , 171 ; achromatic combinations ...
... tion , 162-165 ; standard scale of colours , 166 ; Def . of deviation , dis- persion , irrationality of dispersion , secondary spectra , 167 ; dispersion of two colours by a prism , 168 ; dispersive power , 171 ; achromatic combinations ...
Page 1
... tion of the circumstances of such propagation . The science is divided into Geometrical and Physical Optics . In Geometrical Optics the circumstances of the transmission of light are computed on certain laws established by experiment ...
... tion of the circumstances of such propagation . The science is divided into Geometrical and Physical Optics . In Geometrical Optics the circumstances of the transmission of light are computed on certain laws established by experiment ...
Page 7
... tion of the ray QR after refraction . Draw RN , R'N ' perpendicular to the surface at the points R , R ' , and let S'R ' be the intersection of the plane SRR ' with the plane Q'R'N ' ' ( if these planes be not coincident ) . Q'R ' QRY ...
... tion of the ray QR after refraction . Draw RN , R'N ' perpendicular to the surface at the points R , R ' , and let S'R ' be the intersection of the plane SRR ' with the plane Q'R'N ' ' ( if these planes be not coincident ) . Q'R ' QRY ...
Page 9
... tion have greater difficulty than the last investigation because in none of them will the pencil after reflexion or refraction pass accurately through a point . Our attention will at pre- sent be confined to plane and spherical surfaces ...
... tion have greater difficulty than the last investigation because in none of them will the pencil after reflexion or refraction pass accurately through a point . Our attention will at pre- sent be confined to plane and spherical surfaces ...
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Common terms and phrases
aberration achromatism angle of incidence axis QA bright centre circle of least coincides colours concave conical surfaces convex lens cos² Crown 8vo cuts the axis deviation diameter direct pencil distance emergent equation excentrical eye-glass eye-piece Fcap field of view fixed lines focal length geometrical focus Hence illumination image formed incident directly incident pencil index of refraction intersection lenses luminous point magnifying power medium object object-glass parallel rays passes pencil of parallel pencil of rays pencil whose axis perpendicular plane surface point of incidence point q position primary plane principal focus principal plane prism radius rays incident reflected or refracted reflected pencil reflexion or refraction refracted rays refracting angle refracting surface refractive index shew small oblique pencil small pencil spectrum sphere spherical reflector spherical surface subtends supposed telescope thin lens v₁ v₂ αμ
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