Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 895
... incident waves , we have , for the incident waves , Y1 a sin x + v t λ 2π , ( 1 ) a denoting the amplitude , and λ the wave - length . For the reflected waves , we have Y1 = a sin * —vt 2 ′′ , x - vt λ 12 ) since this equation ...
... incident waves , we have , for the incident waves , Y1 a sin x + v t λ 2π , ( 1 ) a denoting the amplitude , and λ the wave - length . For the reflected waves , we have Y1 = a sin * —vt 2 ′′ , x - vt λ 12 ) since this equation ...
Página 955
... incident beam , and an observer stationed behind the source will see its image in the mirror as a luminous point . Now imagine a toothed - wheel , with its plane perpendicular to the path of the beam , revolving uniformly in front of ...
... incident beam , and an observer stationed behind the source will see its image in the mirror as a luminous point . Now imagine a toothed - wheel , with its plane perpendicular to the path of the beam , revolving uniformly in front of ...
Página 956
... incident beam had passed ; a triple velocity would again produce total eclipse , and so on . Several independent determinations of the velocity of light may thus be obtained . Thus far , we have merely indicated the principle of ...
... incident beam had passed ; a triple velocity would again produce total eclipse , and so on . Several independent determinations of the velocity of light may thus be obtained . Thus far , we have merely indicated the principle of ...
Página 967
... incident beam , and BC the reflected beam . The angle ABD contained between an incident ray and the normal is called the angle of incidence ; and the angle CBD contained between the corresponding reflected ray and the normal is called ...
... incident beam , and BC the reflected beam . The angle ABD contained between an incident ray and the normal is called the angle of incidence ; and the angle CBD contained between the corresponding reflected ray and the normal is called ...
Página 970
... incident beam may be white , the diffused light is usually coloured . The power which a body possesses of making such selection consti- tutes its colour . The word reflection is often used by itself to denote what we have here called ...
... incident beam may be white , the diffused light is usually coloured . The power which a body possesses of making such selection consti- tutes its colour . The word reflection is often used by itself to denote what we have here called ...
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Términos y frases comunes
achromatic analyser angle of incidence beam body bright lines called centimetres centre coincidence colours concave mirror conjugate foci convex convex lens crystal curvature denote diameter direction distance employed equal experiment eye-piece flame focal length frequency of vibration fundamental note glass harmonics Hence Iceland-spar incident ray index of refraction interval inverted law of sines lens lenses luminous point magnifying power medium metres minimum deviation nearly node normal number of vibrations object object-glass oblique observer obtained octave optical ordinary parallel particles pencil perpendicular pipe pitch placed plane mirror plate polarization portion position principal axis principal focus prism produced propagation radius rarefaction ratio reflected rays refrangibility represented retina rotation screen seen side slit solar spectra spectrum spherical string subtends surface telescope tion tone traversing tube undulation velocity of sound vertical vibrations vibrations per second violet virtual image visual angle wave-front wave-length waves