Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 870
... kind of noise may be illustrated by sliding the finger along a violin - string , while the bow is applied . All sounds may be resolved into combinations of elementary musi- cal tones occurring simultaneously and in succession . Hence ...
... kind of noise may be illustrated by sliding the finger along a violin - string , while the bow is applied . All sounds may be resolved into combinations of elementary musi- cal tones occurring simultaneously and in succession . Hence ...
Página 872
... kind of gas , or with vapour either saturated or non - saturated , and it will thus be found that all these bodies transmit sound . Sound is also transmitted through liquids , as may easily be proved by direct experiment . Experiment ...
... kind of gas , or with vapour either saturated or non - saturated , and it will thus be found that all these bodies transmit sound . Sound is also transmitted through liquids , as may easily be proved by direct experiment . Experiment ...
Página 876
... kind , are called longitudinal ; and it is by such vibrations that sound is pro- pagated through air . Fig . 605 illustrates the manner in which an undulation may be propagated by means of transverse vibrations , that is to say , by ...
... kind , are called longitudinal ; and it is by such vibrations that sound is pro- pagated through air . Fig . 605 illustrates the manner in which an undulation may be propagated by means of transverse vibrations , that is to say , by ...
Página 880
... kind that the velocity of sound in air has been most accurately determined . Among the best determina- tions may be mentioned that of Lacaille , and other members of a commission appointed by the French Academy in 1738 ; that of Arago ...
... kind that the velocity of sound in air has been most accurately determined . Among the best determina- tions may be mentioned that of Lacaille , and other members of a commission appointed by the French Academy in 1738 ; that of Arago ...
Página 898
... kind , involving a perception of the relation existing between them as regards difference of pitch . This impression is often recog- nized as identical where absolute pitch is very different , and we express this identity of impression ...
... kind , involving a perception of the relation existing between them as regards difference of pitch . This impression is often recog- nized as identical where absolute pitch is very different , and we express this identity of impression ...
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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