The Nature of Light, with a General Account of Physical OpticsHenry S. King & Company, 1875 - 356 стор. |
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Сторінка 12
... reflected from their surface ; that is to say , in such a manner that every illuminated point throws out rays from ... reflection of the earth illuminated by the sun's rays . 9. Light , proceeding from a self - luminous or from an ...
... reflected from their surface ; that is to say , in such a manner that every illuminated point throws out rays from ... reflection of the earth illuminated by the sun's rays . 9. Light , proceeding from a self - luminous or from an ...
Сторінка 23
... reflects less FIG . 12 . Bunsen's Photometer . than the unstained part of the paper . If therefore the paper be illuminated more strongly from behind , it appears bright on a dark ground . On the other hand , it appears dark upon a ...
... reflects less FIG . 12 . Bunsen's Photometer . than the unstained part of the paper . If therefore the paper be illuminated more strongly from behind , it appears bright on a dark ground . On the other hand , it appears dark upon a ...
Сторінка 26
... reflected beam vanishes , but the spot , n , where the paper is struck by the incident rays is brilliantly illu- minated and becomes visible from every side as though it were self - luminous . The dull surface of the paper , although it ...
... reflected beam vanishes , but the spot , n , where the paper is struck by the incident rays is brilliantly illu- minated and becomes visible from every side as though it were self - luminous . The dull surface of the paper , although it ...
Сторінка 27
... reflects them in a perfectly definite direction without otherwise materially altering them . In fact , if a sufficiently small opening be made in the shutter , the same oval image of the sun appears on the roof of the room where the ...
... reflects them in a perfectly definite direction without otherwise materially altering them . In fact , if a sufficiently small opening be made in the shutter , the same oval image of the sun appears on the roof of the room where the ...
Сторінка 28
... angle of incidence of 20 ° , and hence if the above law of reflexion be correct , should be reflected to the line marking 40 ° , and in point of fact it will be found that this is the degree which is brilliantly illumi-. 28 OPTICS .
... angle of incidence of 20 ° , and hence if the above law of reflexion be correct , should be reflected to the line marking 40 ° , and in point of fact it will be found that this is the degree which is brilliantly illumi-. 28 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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