Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 880
... determined . Among the best determina- tions may be mentioned that of Lacaille , and other members of a commission ... determination would be vitiated by the effect of wind blowing either with or against the sound . The error from this ...
... determined . Among the best determina- tions may be mentioned that of Lacaille , and other members of a commission ... determination would be vitiated by the effect of wind blowing either with or against the sound . The error from this ...
Página 881
... determined by observation , is identical , or practically identical , with the latter of these limiting values . Hence we must infer that the compressions and extensions which the particles of air undergo in transmitting sound are of ...
... determined by observation , is identical , or practically identical , with the latter of these limiting values . Hence we must infer that the compressions and extensions which the particles of air undergo in transmitting sound are of ...
Página 884
... determined . The velocity thus computed was 1435 metres per second , and the temperature of the water was 8 ° .1 C. Formula ( 1 ) of § 874 holds for liquids as well as for gases . The resistance of water to compression is about 2.1 x ...
... determined . The velocity thus computed was 1435 metres per second , and the temperature of the water was 8 ° .1 C. Formula ( 1 ) of § 874 holds for liquids as well as for gases . The resistance of water to compression is about 2.1 x ...
Página 886
... determined by the direction along which the sonorous pulses are propagated , and is always normal to the waves . A normal to a set of sound - waves may therefore conveniently be called a ray of sound . OI is a direct ray , and I M the ...
... determined by the direction along which the sonorous pulses are propagated , and is always normal to the waves . A normal to a set of sound - waves may therefore conveniently be called a ray of sound . OI is a direct ray , and I M the ...
Página 903
... determine the number of vibrations corresponding to any given sound which we have the power of maintaining steadily , we fix the siren on the bellows , the screw and wheel being dis- connected , and drive the siren until the note which ...
... determine the number of vibrations corresponding to any given sound which we have the power of maintaining steadily , we fix the siren on the bellows , the screw and wheel being dis- connected , and drive the siren until the note which ...
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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