The Nature of Light, with a General Account of Physical OpticsHenry S. King & Company, 1875 - 356 стор. |
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Сторінка 27
... path pursued by the incident and the reflected rays is determined by the angle of incidence , i , and the angle of reflexion , r , which each of the rays make with the perpendicular . The angle of reflexion is always equal to the angle ...
... path pursued by the incident and the reflected rays is determined by the angle of incidence , i , and the angle of reflexion , r , which each of the rays make with the perpendicular . The angle of reflexion is always equal to the angle ...
Сторінка 40
... fall upon a concave mirror with small aperture parallel to its axis ( fig . 26 ) , it will be seen - for the path of the rays can be distinctly followed by the illu- FIG . 26 . mination of the particles of dust 40 OPTICS . SPHERICAL ...
... fall upon a concave mirror with small aperture parallel to its axis ( fig . 26 ) , it will be seen - for the path of the rays can be distinctly followed by the illu- FIG . 26 . mination of the particles of dust 40 OPTICS . SPHERICAL ...
Сторінка 47
... path of the rays which are again diverging after the union of the points of the image . The image appears in these cases to float in the air in front of the mirror . Aerial images of this kind produce the most surprising phenomena . For ...
... path of the rays which are again diverging after the union of the points of the image . The image appears in these cases to float in the air in front of the mirror . Aerial images of this kind produce the most surprising phenomena . For ...
Сторінка 62
... path to a ray entering water from air . Fig . 42 therefore serves to exhibit the opposite course , where bn is the ray of light which is traversing the water , and nl the ray refracted as it emerges into the air . r will of course then ...
... path to a ray entering water from air . Fig . 42 therefore serves to exhibit the opposite course , where bn is the ray of light which is traversing the water , and nl the ray refracted as it emerges into the air . r will of course then ...
Сторінка 68
... ( fig . 51 ) with vertically - placed refracting edge be brought in the path of the horizontal red pencil of * The object of this proceeding will be presently explained . light , so that about one half of the rays 68 OPTICS .
... ( fig . 51 ) with vertically - placed refracting edge be brought in the path of the horizontal red pencil of * The object of this proceeding will be presently explained . light , so that about one half of the rays 68 OPTICS .
Загальні терміни та фрази
absorption æther angle of incidence angle of refraction aperture appears beam blue body bright lines carbon points centre circle colour consequently convex convex lens corresponding Crown 8vo crown glass crystal dark lines Demy 8vo difference of path diffraction direction double refraction elementary waves equal exhibit fasciculus Fcap flame flint glass fluorescence focal distance green half wave-length Heliostat homogeneous Iceland spar illuminated Illustrations incident rays index of refraction International Scientific Series lens lenses luminous point marginal rays metal Nicol's prism object observed optic axis parallel particles pass perpendicular phenomena placed plane of vibration polariscope polarised ray position Post 8vo principal plane prism propagated Quartz ray of light reflected reflexion refracted ray refracting angle refrangible regarded right angles rotated screen Second Edition seen slit Sodium solar spectrum source of light spectra surface telescope thickness tion traverse tube undulatory vapour velocity vertical violet vols whilst yellow
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