A Treatise on Optics |
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Page v
... mirrors and inclined mirrors , 32-35 ; aplanatic surfaces , 36 . PAGE I CHAPTER II . Illumination of Surfaces Measure and law of illumination , 37-40 ; law of intensity of emission , 41 ; method of calculating illumination , 42 , 43 ...
... mirrors and inclined mirrors , 32-35 ; aplanatic surfaces , 36 . PAGE I CHAPTER II . Illumination of Surfaces Measure and law of illumination , 37-40 ; law of intensity of emission , 41 ; method of calculating illumination , 42 , 43 ...
Page vii
... mirror , 150 ; Brightness of an image , 151 , 152 ; length , & c . of a caustic , 153 , 154 . 126 CHAPTER IX . On the Chromatic Dispersion of Light Newton's experiment , 156 ; pure spectrum , how observed by Wollaston and Fraunhofer ...
... mirror , 150 ; Brightness of an image , 151 , 152 ; length , & c . of a caustic , 153 , 154 . 126 CHAPTER IX . On the Chromatic Dispersion of Light Newton's experiment , 156 ; pure spectrum , how observed by Wollaston and Fraunhofer ...
Page 15
... mirror . The points and F are thus convertible , and for this reason are sometimes called conjugate foci ; as was remarked before , Art . 18 , Obs . 23. The case of a divergent pencil and concave mirror by which the propositions of Art ...
... mirror . The points and F are thus convertible , and for this reason are sometimes called conjugate foci ; as was remarked before , Art . 18 , Obs . 23. The case of a divergent pencil and concave mirror by which the propositions of Art ...
Page 16
... mirror , u is negative , r is positive . Falways lies to the right of A. ( iv ) Convergent pencil , } Convex mirror , Ju is negative , r is negative . Flies to the right or left of A R I A R Q R R r as u is > 2 Obs . All these results ...
... mirror , u is negative , r is positive . Falways lies to the right of A. ( iv ) Convergent pencil , } Convex mirror , Ju is negative , r is negative . Flies to the right or left of A R I A R Q R R r as u is > 2 Obs . All these results ...
Page 17
... mirror has been taken in order that all the lines which enter may be measured in a positive direction . The remarks of Art . 23 will , mutatis mutandis , apply to this . The result 1 1 2 + 9 P r 1 HID result of Art . 21 , viz . + - v ...
... mirror has been taken in order that all the lines which enter may be measured in a positive direction . The remarks of Art . 23 will , mutatis mutandis , apply to this . The result 1 1 2 + 9 P r 1 HID result of Art . 21 , viz . + - v ...
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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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