A Treatise on Optics |
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Page vii
... given colour — and the index of refraction , —test of the law of refrac- tion , 162–165 ; standard scale of colours , 166 ; Def . of deviation , dis- persion , irrationality of dispersion , secondary spectra , 167 ; dispersion of two ...
... given colour — and the index of refraction , —test of the law of refrac- tion , 162–165 ; standard scale of colours , 166 ; Def . of deviation , dis- persion , irrationality of dispersion , secondary spectra , 167 ; dispersion of two ...
Page 4
... given medium into another . sin & sin o This constant quantity is usually denoted by the symbol μ , and is called the refractive index between the two media for the particular species of light considered . It is a parameter which varies ...
... given medium into another . sin & sin o This constant quantity is usually denoted by the symbol μ , and is called the refractive index between the two media for the particular species of light considered . It is a parameter which varies ...
Page 5
... given , more or less accurate ; perhaps one of the highest confirmations of it is derived from the accordance of Transit observations of Stars made by reflexion at the surface of mercury with results obtained independently of reflexion ...
... given , more or less accurate ; perhaps one of the highest confirmations of it is derived from the accordance of Transit observations of Stars made by reflexion at the surface of mercury with results obtained independently of reflexion ...
Page 17
... given position . In a subsequent chapter we propose to give a method of determining the visible image in ordinary cases . 27. To find the geometrical focus of a pencil of rays after direct refraction at a spherical surface . Let be the ...
... given position . In a subsequent chapter we propose to give a method of determining the visible image in ordinary cases . 27. To find the geometrical focus of a pencil of rays after direct refraction at a spherical surface . Let be the ...
Page 22
... will be sufficient to indicate the man- ner in which the images are seen by an eye in a given position , the small pencil received by the eye passing be- tween the reflexions in the same manner as if it 22 PARALLEL MIRRORS .
... will be sufficient to indicate the man- ner in which the images are seen by an eye in a given position , the small pencil received by the eye passing be- tween the reflexions in the same manner as if it 22 PARALLEL MIRRORS .
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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.