Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 866
... of it , its movements become more rapid , and at the same time VIBRATION OF A PLATE . 867 more limited , until. Fig . 593. - Vibration of Bell . Fig . 594. - Vibration of Plate . Fig . 866 PRODUCTION AND FROPAGATION OF SOUND .
... of it , its movements become more rapid , and at the same time VIBRATION OF A PLATE . 867 more limited , until. Fig . 593. - Vibration of Bell . Fig . 594. - Vibration of Plate . Fig . 866 PRODUCTION AND FROPAGATION OF SOUND .
Página 867
... become much too small to be visible . It thus appears that a vibratory movement , if sufficiently rapid , may produce a sound . The following experiments afford additional illustration of this principle , and are samples of the evidence ...
... become much too small to be visible . It thus appears that a vibratory movement , if sufficiently rapid , may produce a sound . The following experiments afford additional illustration of this principle , and are samples of the evidence ...
Página 877
... become less marked , and ultimately to disappear , as the distance is increased . Fig . 606 represents a diametral section of a series of spherical waves . Their mode of propagation has some analogy to that of the circular ...
... become less marked , and ultimately to disappear , as the distance is increased . Fig . 606 represents a diametral section of a series of spherical waves . Their mode of propagation has some analogy to that of the circular ...
Página 879
... becomes converted into heat . This conversion is greatly promoted by defect of homogeneity in the medium of propagation . In a fog , or a snow - storm , the liquid or solid particles present in the air produce innumerable reflections ...
... becomes converted into heat . This conversion is greatly promoted by defect of homogeneity in the medium of propagation . In a fog , or a snow - storm , the liquid or solid particles present in the air produce innumerable reflections ...
Página 885
... becomes iden- tical1 with Young's modulus ( § 128 ) . On the other hand , if uniform spherical waves of alternate compression and extension spread out- wards , symmetrically , from a point in the centre of an infinite solid , lateral ...
... becomes iden- tical1 with Young's modulus ( § 128 ) . On the other hand , if uniform spherical waves of alternate compression and extension spread out- wards , symmetrically , from a point in the centre of an infinite solid , lateral ...
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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