A Treatise on Optics |
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Page v
... objects appear equally bright at all distances , 44 ; Ritchie's photometer , 45 ; example , 46 ; velocity of light , 47 . 29 CHAPTER III . Aberration of small direct pencils Measure of aberration , 48 ; Formula for aberration after ...
... objects appear equally bright at all distances , 44 ; Ritchie's photometer , 45 ; example , 46 ; velocity of light , 47 . 29 CHAPTER III . Aberration of small direct pencils Measure of aberration , 48 ; Formula for aberration after ...
Page vii
... object , 148 , 149 ; calculation of the distortion in the case of a spherical mirror , 150 ; Brightness of an image , 151 , 152 ; length , & c . of a caustic , 153 , 154 . 114 126 CHAPTER IX . On the Chromatic Dispersion of Light ...
... object , 148 , 149 ; calculation of the distortion in the case of a spherical mirror , 150 ; Brightness of an image , 151 , 152 ; length , & c . of a caustic , 153 , 154 . 114 126 CHAPTER IX . On the Chromatic Dispersion of Light ...
Page viii
... object seen through a lens , 198 ; magnifying power of a lens , 200 , 201 ; Telescopes , their object , 203 ; the Astronomical Tele- scope , its field of view , and magnifying power , the ragged edge and stop , 204-206 ; Galileo's ...
... object seen through a lens , 198 ; magnifying power of a lens , 200 , 201 ; Telescopes , their object , 203 ; the Astronomical Tele- scope , its field of view , and magnifying power , the ragged edge and stop , 204-206 ; Galileo's ...
Page 1
... object is presented before us , we become by vision sensible of its existence 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 ...
... object is presented before us , we become by vision sensible of its existence 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 ...
Page 17
... object has been placed in the position of Q , and its geometrical image in the position of F , as a guide to the student in tracing the form of such an image relatively to the object : under- standing by geometrical image , the locus of ...
... object has been placed in the position of Q , and its geometrical image in the position of F , as a guide to the student in tracing the form of such an image relatively to the object : under- standing by geometrical image , the locus of ...
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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.