Light, Visible and Invisible |
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Page 32
Eduard Rüchardt. III . The Speed of Light The fact that light takes time to travel from its source to the eye of the observer was discovered as early as 1676 by the Danish astronomer Ole Roemer . He found the speed of light in a vacuum ...
Eduard Rüchardt. III . The Speed of Light The fact that light takes time to travel from its source to the eye of the observer was discovered as early as 1676 by the Danish astronomer Ole Roemer . He found the speed of light in a vacuum ...
Page 46
... light bundle is bent at an angle to the perpendicu- lar at the point of incidence . The ... light in medium 1 and 2 respectively . This is the law of refraction , and the refractive index n , is nothing else than simply the ratio of the speed ...
... light bundle is bent at an angle to the perpendicu- lar at the point of incidence . The ... light in medium 1 and 2 respectively . This is the law of refraction , and the refractive index n , is nothing else than simply the ratio of the speed ...
Page 114
... speed of light becomes greater than in empty space . " Speed of light " denotes the so - called phase velocity , meaning the velocity of the propagation of a wave crest or trough of an unbounded wave train . The phase velocity may be ...
... speed of light becomes greater than in empty space . " Speed of light " denotes the so - called phase velocity , meaning the velocity of the propagation of a wave crest or trough of an unbounded wave train . The phase velocity may be ...
Contents
CONTENTS | 9 |
Light Waves a Useful Fiction | 20 |
The Speed of Light | 32 |
Copyright | |
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Common terms and phrases
amplitude atoms axis bands beam blue bright carbon disulfide color crystal dark deviated diameter diffraction direction disk distance Doppler effect double refraction double star electric field electric waves elementary waves emitted energy excited experiment Fraunhofer lines frequency glass plate grating green homogeneous inch infrared light instance intensity interference fringes interferometer invisible lamp layer lens light rays light source light waves magnetic field measurement mercury metal mica microscope mirror object observed opaque optical ordinary light oscillators parallel particles path difference photograph plane polarized light polarizing angle prism produce propagation refractive index right angles scattered screen short-waved shown in Figure shows slit sound source of light space spectral lines spectrum speed of light spot substance surface telescope tion total reflection transmitted transparent transverse waves tube ultraviolet velocity vibrations visible light water waves wave length wave theory white light X rays yellow Zeeman effect