An Elementary Treatise on Geometrical Optics |
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... Lenses • PAGE 1 15 34 47 59 75 93 105 · VII . On Images and Simple Optical Instruments VIII . On Compound Optical Instruments . IX . On Dispersion and Achromatic Combinations . 126 X. Miscellaneous Theorems XI . The Rainbow 143 158 ...
... Lenses • PAGE 1 15 34 47 59 75 93 105 · VII . On Images and Simple Optical Instruments VIII . On Compound Optical Instruments . IX . On Dispersion and Achromatic Combinations . 126 X. Miscellaneous Theorems XI . The Rainbow 143 158 ...
Page 74
... ratio of μ2 - 2μ cos √ ( 42- π n 1 ) to μ + 1 . 22. Prove that in prisms of the same material , as the re- fracting angle increases the minimum deviation also increases . CHAPTER VI . ON REFRACTION THROUGH LENSES . 66 .
... ratio of μ2 - 2μ cos √ ( 42- π n 1 ) to μ + 1 . 22. Prove that in prisms of the same material , as the re- fracting angle increases the minimum deviation also increases . CHAPTER VI . ON REFRACTION THROUGH LENSES . 66 .
Page 75
... lens . The line joining the centres of the spheres is called the axis of the lens . Lenses of different forms are distinguished by names indicating the nature of their bounding surfaces with re- spect to the external medium . A lens ...
... lens . The line joining the centres of the spheres is called the axis of the lens . Lenses of different forms are distinguished by names indicating the nature of their bounding surfaces with re- spect to the external medium . A lens ...
Page 76
... lens , which is on the whole thicker at the middle than at the borders , is called generally a convex lens , while one , which is on the whole thinner at the middle than at the borders , is called a concave lens . A concavo - convex or ...
... lens , which is on the whole thicker at the middle than at the borders , is called generally a convex lens , while one , which is on the whole thinner at the middle than at the borders , is called a concave lens . A concavo - convex or ...
Page 77
... lens into the external medium is 1 we have 1 μ 1 μ or 30 AF Aq 1 v - μ Aq Ꭶ 1 9 S adding this to the former equation we have 1 v 1 น = ( u - 1 ) If the original pencil consist of parallel rays , u is in- finite , and if the ... Lenses . 77.
... lens into the external medium is 1 we have 1 μ 1 μ or 30 AF Aq 1 v - μ Aq Ꭶ 1 9 S adding this to the former equation we have 1 v 1 น = ( u - 1 ) If the original pencil consist of parallel rays , u is in- finite , and if the ... Lenses . 77.
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Common terms and phrases
angle of incidence astronomical telescope C. S. CALVERLEY Cambridge centre coincide concave cone converge convex lens diameter direction dispersive power diverge edge emergence equal eye-glass eye-lens eye-piece F₁ Fcap Fellow of St Fellow of Trinity Find the position focal length foci formula geometrical focus glass Hence illumination image formed inches index of refraction internal reflection J. W. DONALDSON last Article late Fellow lenses luminous point magnifying power minimum deviation object object-glass parallel rays pass pencil of light pencil of parallel perpendicular plane mirror portion Post 8vo primary plane prism produced prove R. C. JEBB radius ray of light real image reflecting surface refracted pencil refracted ray refraction or reflection refractive index right angles screen second medium secondary focus Shew small pencil spectrum sphere spherical surface St John's College Third Edition tion triangle Trinity College vertex
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