Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 881
... face is found by compounding this velocity with the velocity of the wind . There is some reason , both from theory and experiment , for be- lieving that very loud sounds travel rather faster than sounds of moderate intensity . 874 ...
... face is found by compounding this velocity with the velocity of the wind . There is some reason , both from theory and experiment , for be- lieving that very loud sounds travel rather faster than sounds of moderate intensity . 874 ...
Página 892
... faces , throws back the pendulum , while it remains nearly free from vibration at the nodes . Regnault made extensive use of the acoustic pendulum in his ex- periments on the velocity of sound . The pendulum , when thrown back by the ...
... faces , throws back the pendulum , while it remains nearly free from vibration at the nodes . Regnault made extensive use of the acoustic pendulum in his ex- periments on the velocity of sound . The pendulum , when thrown back by the ...
Página 914
... faces of violins and the sounding- boards of pianos , are capable of vibrating , more or less freely , in any period lying between certain wide limits . They are accordingly set in vibration by all the notes of their respective ...
... faces of violins and the sounding- boards of pianos , are capable of vibrating , more or less freely , in any period lying between certain wide limits . They are accordingly set in vibration by all the notes of their respective ...
Página 915
... face of the body is horizontal , the division into separate vibrating segments can be rendered visible by a method devised by Chladni , namely , by strewing sand on this face . During the vibra- tion , the sand , as it is tossed about ...
... face of the body is horizontal , the division into separate vibrating segments can be rendered visible by a method devised by Chladni , namely , by strewing sand on this face . During the vibra- tion , the sand , as it is tossed about ...
Página 940
... face of the cylinder is also fluted screw - fashion , the distance between its flutings being the same as the distance between the threads on the axle . A is the diaphragm , of thin sheet - iron , having the style fixed to its centre ...
... face of the cylinder is also fluted screw - fashion , the distance between its flutings being the same as the distance between the threads on the axle . A is the diaphragm , of thin sheet - iron , having the style fixed to its centre ...
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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