A Treatise on Optics |
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Page 9
... moves up to A ; therefore q is the geometrical focus of the reflected pencil . 17. The succeeding cases of direct reflexion and refrac- tion have greater difficulty than the last investigation because in none of them will the pencil ...
... moves up to A ; therefore q is the geometrical focus of the reflected pencil . 17. The succeeding cases of direct reflexion and refrac- tion have greater difficulty than the last investigation because in none of them will the pencil ...
Page 11
... moves up to A , and to F , 9 AF : = μ . AQ , or v = μu , which formula gives the position of the geometrical focus of the refracted pencil . 20. Obs . In this proposition the pencil is considered divergent , as will be done in other ...
... moves up to A , and to F , 9 AF : = μ . AQ , or v = μu , which formula gives the position of the geometrical focus of the refracted pencil . 20. Obs . In this proposition the pencil is considered divergent , as will be done in other ...
Page 11
... moves up to A ; therefore q is the geometrical focus of the reflected pencil . 17. The succeeding cases of direct reflexion and refrac- tion have greater difficulty than the last investigation because in none of them will the pencil ...
... moves up to A ; therefore q is the geometrical focus of the reflected pencil . 17. The succeeding cases of direct reflexion and refrac- tion have greater difficulty than the last investigation because in none of them will the pencil ...
Page 13
... moves up to A , and to F , AF - μ.AQ , or v = μu , q which formula gives the position of the geometrical focus of the refracted pencil . ми 20. Obs . In this proposition the pencil is considered divergent , as will be done in other ...
... moves up to A , and to F , AF - μ.AQ , or v = μu , q which formula gives the position of the geometrical focus of the refracted pencil . ми 20. Obs . In this proposition the pencil is considered divergent , as will be done in other ...
Page 14
Stephen Parkinson. or ultimately when R moves up to A , and q to F , 30 or AQ . OF AF . OQ , = u ( r - v ) = v ( u − r ) ; ... .. 1/2 1/2 - + 1 r 1 - = - - 1 1 2 == V и r и " a formula which determines the position of F. COR . 1. If u ...
Stephen Parkinson. or ultimately when R moves up to A , and q to F , 30 or AQ . OF AF . OQ , = u ( r - v ) = v ( u − r ) ; ... .. 1/2 1/2 - + 1 r 1 - = - - 1 1 2 == V и r и " a formula which determines the position of F. COR . 1. If u ...
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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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