An Elementary Treatise on Geometrical Optics ... |
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Page 26
... taking the formula 1 + ข - 1 2 น it is easy to trace out the changes in the position of F cor- responding to various positions of Q. First we may notice that if u increases , v 26 REFLECTION AND REFRACTION OF DIRECT PENCILS .
... taking the formula 1 + ข - 1 2 น it is easy to trace out the changes in the position of F cor- responding to various positions of Q. First we may notice that if u increases , v 26 REFLECTION AND REFRACTION OF DIRECT PENCILS .
Page 27
William Steadman Aldis. First we may notice that if u increases , v must decrease , since 1 1 - + remains of invariable value . Hence Q and F v U move in opposite directions . When Q is at an infinite distance to the right hand , r v ...
William Steadman Aldis. First we may notice that if u increases , v must decrease , since 1 1 - + remains of invariable value . Hence Q and F v U move in opposite directions . When Q is at an infinite distance to the right hand , r v ...
Page 29
... increase or decrease together . Hence Q and F move in the same direction . The student can easily verify the following facts . ( 1 ) When Q is at an infinite distance to the right of A , F is at a point F1 such that AF , 1 = μη μ - 1 ...
... increase or decrease together . Hence Q and F move in the same direction . The student can easily verify the following facts . ( 1 ) When Q is at an infinite distance to the right of A , F is at a point F1 such that AF , 1 = μη μ - 1 ...
Page 59
... o ' be the angles of incidence and refraction respectively , and μ be the index of refraction between the media , we have sin = μ sin p ' . From this equation it is evident that as increases so On Refraction through Prisms and Plates.
... o ' be the angles of incidence and refraction respectively , and μ be the index of refraction between the media , we have sin = μ sin p ' . From this equation it is evident that as increases so On Refraction through Prisms and Plates.
Page 60
... increases , the deviation increases also . For sin = μ sin & ' , sin sin o - sino + sin o ' ... tan φφ ' 2 = = ~ μ 1 μ + 1 ' tan μ + 1 $ + p . 2 μ 1 But as increases , so does p ' , and therefore + ; φφ ' 2 whence increases with 4 . Φ 2 ...
... increases , the deviation increases also . For sin = μ sin & ' , sin sin o - sino + sin o ' ... tan φφ ' 2 = = ~ μ 1 μ + 1 ' tan μ + 1 $ + p . 2 μ 1 But as increases , so does p ' , and therefore + ; φφ ' 2 whence increases with 4 . Φ 2 ...
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2nd edition 3rd edition 4th edition Aeneid angle of incidence astronomical telescope axis Book Camb Cambridge centre concave convex lens cosē Crown 8vo Demy 8vo diameter direction distance diverge emergence English equal eye-glass eye-lens eye-piece F. A. PALEY Fcap Fellow of St focal length foci formula French geometrical focus glass Grammar Greek Hence illumination image formed inches incident ray index of refraction J. H. FREESE John's College last Article late Fellow Latin lenses LL.D luminous point magnifying power Mathematical minimum deviation object object-glass obliquely parallel rays pass pencil pencil of light pencil of parallel perpendicular placed portion primary plane prism Professor radius ray of light reflected ray reflecting surface refracted ray refraction or reflection refractive index revised School screen Small post 8vo spectrum sphere spherical surface Translated triangle Trinity College v₁ vertex whence
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