A Treatise on Optics |
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Page 1
... figure . In such a case light is said to be propagated from the object to our eyes , and the science of Optics has for its design the examina- tion of the circumstances of such propagation . The science is divided into Geometrical and ...
... figure . In such a case light is said to be propagated from the object to our eyes , and the science of Optics has for its design the examina- tion of the circumstances of such propagation . The science is divided into Geometrical and ...
Page 8
... figure the dotted lines SR , S'R ' are the directions of the refracted rays produced backward : it may not be amiss to suggest to the student that he will often avoid confusion in optical diagrams if he indicates by dotted lines any ...
... figure the dotted lines SR , S'R ' are the directions of the refracted rays produced backward : it may not be amiss to suggest to the student that he will often avoid confusion in optical diagrams if he indicates by dotted lines any ...
Page 12
... QA to be reflected in direction Rq ' ( these lines QR , Rq ' are not drawn in the figure ) , then in the two triangles Qq'R , Rq'q , we have QRQ ' = < = < RQq ' , < q'Rq = L and Rqq is common to the two triangles , 12 REFLEXION AT A.
... QA to be reflected in direction Rq ' ( these lines QR , Rq ' are not drawn in the figure ) , then in the two triangles Qq'R , Rq'q , we have QRQ ' = < = < RQq ' , < q'Rq = L and Rqq is common to the two triangles , 12 REFLEXION AT A.
Page 21
... figure of revolution , it is in general sufficient , when the pencil is not very large , to consider the surface the same as the sphe- rical surface generated by the circle of curvature at the vertex of the generating curve . The case ...
... figure of revolution , it is in general sufficient , when the pencil is not very large , to consider the surface the same as the sphe- rical surface generated by the circle of curvature at the vertex of the generating curve . The case ...
Page 22
... figure , to avoid confusion . ) = The distances QQ1 , QQ , ... may be easily calculated . For putting QA = a , QB = b , AB = a + b = c , we have QQ1 = 2AQ = 2a , 1 QQ2 = BQ + BQ1 = QQ1 + 2BQ = 2a + 2b = 2c , QQ2 = AQ + A Q2 = Q Q2 + 2A ...
... figure , to avoid confusion . ) = The distances QQ1 , QQ , ... may be easily calculated . For putting QA = a , QB = b , AB = a + b = c , we have QQ1 = 2AQ = 2a , 1 QQ2 = BQ + BQ1 = QQ1 + 2BQ = 2a + 2b = 2c , QQ2 = AQ + A Q2 = Q Q2 + 2A ...
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Common terms and phrases
aberration achromatism angle of incidence axis QA bright centre circle of least cloth coincides colours concave converge convex lens cos² Crown 8vo cuts the axis determine deviation direct pencil distance emergent equation excentrical eye-glass eye-piece Fcap fixed lines focal length geometrical focus Hence illumination image formed incident directly incident pencil index of refraction intersection lenses luminous point magnifying power medium mirror object object-glass parallel rays passes pencil of light pencil of parallel pencil of rays pencil whose axis perpendicular plane surface point of incidence position primary plane principal focus principal plane prism radii radius rays incident reflected or refracted reflected pencil reflexion or refraction refracted rays refracting angle refracting surface refractive index retina shew small oblique pencil small pencil spectrum sphere spherical reflector spherical surface supposed telescope thin lens v₁ v₂ αμ аф
Popular passages
Page 305 - Eumenides. The Greek Text with English Notes, and an Introduction, containing an Analysis of Miiller's Dissertations.