A Treatise on Optics |
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Page 7
... intersection of the plane SRR ' with the plane Q'R'N ' . Now QR RN are parallel to SQ'R ' ; R'N ' .. the plane QRS is parallel to the plane Q'R'S ' , ( Euc . XI . 15 ) , st . line RS R'N ' .... st . line R'S ' , ( Euc . XI . 16 ) . Also ...
... intersection of the plane SRR ' with the plane Q'R'N ' . Now QR RN are parallel to SQ'R ' ; R'N ' .. the plane QRS is parallel to the plane Q'R'S ' , ( Euc . XI . 15 ) , st . line RS R'N ' .... st . line R'S ' , ( Euc . XI . 16 ) . Also ...
Page 11
... intersection of the plane SRR ' with the plane Q'R'N ' . Now QR RNS are parallel to R R'N ' .. the plane QRS is parallel to the plane Q'R'S ' , ( Euc . XI . 15 ) , st . line RS .... st . line R'S ' , ( Euc . XI . 16 ) . Also because Q R ...
... intersection of the plane SRR ' with the plane Q'R'N ' . Now QR RNS are parallel to R R'N ' .. the plane QRS is parallel to the plane Q'R'S ' , ( Euc . XI . 15 ) , st . line RS .... st . line R'S ' , ( Euc . XI . 16 ) . Also because Q R ...
Page 25
... intersection - which is represented by the point 0 . Describe a circle with centre O and passing through Q. Draw 22 , perpendicular to the first mirror A , and meeting the circle in Q ,. Then Q , Q , are equidistant from the mirror A ...
... intersection - which is represented by the point 0 . Describe a circle with centre O and passing through Q. Draw 22 , perpendicular to the first mirror A , and meeting the circle in Q ,. Then Q , Q , are equidistant from the mirror A ...
Page 33
... intersect the surface of this sphere in the curve bc . Take also an element B A C P of the surface BC , and let p be the corresponding element of the spherical surface formed as before . Let a , be the inclinations of AP to the ...
... intersect the surface of this sphere in the curve bc . Take also an element B A C P of the surface BC , and let p be the corresponding element of the spherical surface formed as before . Let a , be the inclinations of AP to the ...
Page 37
... intersect P p the spherical surface described about A in the small circle pq , the plane of which meets AC or AC produced in c . Then projection on plane AP , of the curved surface pq , = projection of the plane circle pq = T . cp2 ср ...
... intersect P p the spherical surface described about A in the small circle pq , the plane of which meets AC or AC produced in c . Then projection on plane AP , of the curved surface pq , = projection of the plane circle pq = T . cp2 ср ...
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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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