Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 860
... produced by small apertures , 938 . Shadows . Umbra and penumbra , 939. Velocity of light , 940. Fizeau's experiment and Cornu's , 941. Foucault's experiment , 942. Later determinations of velocity by Foucault's method , 943. Eclipses ...
... produced by small apertures , 938 . Shadows . Umbra and penumbra , 939. Velocity of light , 940. Fizeau's experiment and Cornu's , 941. Foucault's experiment , 942. Later determinations of velocity by Foucault's method , 943. Eclipses ...
Página 861
... produces loss of effective brightness , 1037. Intrinsic brightness of image in theoretically perfect telescope is ... produce the same visual impression , 1970. Methods of mixture : glass plate ; rotating disc ; overlapping spectra . A.
... produces loss of effective brightness , 1037. Intrinsic brightness of image in theoretically perfect telescope is ... produce the same visual impression , 1970. Methods of mixture : glass plate ; rotating disc ; overlapping spectra . A.
Página 862
... produced by thin plates of selenite , 1107. Rectilinear vibration changed to elliptic . Analogy of Lissajous ' figures . Resolution of elliptic vibration by analyser . Why the light is coloured . Why a thick plate shows no colour ...
... produced by thin plates of selenite , 1107. Rectilinear vibration changed to elliptic . Analogy of Lissajous ' figures . Resolution of elliptic vibration by analyser . Why the light is coloured . Why a thick plate shows no colour ...
Página 868
... produced from a musical string or wire , its vibrations are often of sufficient amplitude to be detected by the eye . The string thus assumes the appearance of an elongated spindle ( Fig . 595 ) . Vibration of the Air . - The sonorous ...
... produced from a musical string or wire , its vibrations are often of sufficient amplitude to be detected by the eye . The string thus assumes the appearance of an elongated spindle ( Fig . 595 ) . Vibration of the Air . - The sonorous ...
Página 870
... produces the sound . The experiment is more usually performed with a special instru- ment invented by Trevelyan , and called a rocker , which , after being heated and laid upon a block of lead , rocks rapidly from side to side , and ...
... produces the sound . The experiment is more usually performed with a special instru- ment invented by Trevelyan , and called a rocker , which , after being heated and laid upon a block of lead , rocks rapidly from side to side , and ...
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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