Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
Dentro del libro
Resultados 1-5 de 36
Página 859
... pitch , and character . Pitch depends on frequency , 889. Musical intervals , 893 . Gamut , 891. Temperament . Absolute pitch , 892. Limits of pitch in music , 893 . Minor and Pythagorean scales , 894. Methods of counting vibrations ...
... pitch , and character . Pitch depends on frequency , 889. Musical intervals , 893 . Gamut , 891. Temperament . Absolute pitch , 892. Limits of pitch in music , 893 . Minor and Pythagorean scales , 894. Methods of counting vibrations ...
Página 860
... pitch , 932. Imperfect concord , 933. Resultant tones , 934 , 935 , pp . 941-946 . OPTICS . CHAPTER LXVII . PROPAGATION OF LIGHT . Light . Hypothesis of æther , 936. Excessive frequency of vibration . Sharpness of shadows due to ...
... pitch , 932. Imperfect concord , 933. Resultant tones , 934 , 935 , pp . 941-946 . OPTICS . CHAPTER LXVII . PROPAGATION OF LIGHT . Light . Hypothesis of æther , 936. Excessive frequency of vibration . Sharpness of shadows due to ...
Página 862
... pitch , 1078 , pp . 1087-1098 . CHAPTER LXXIV . WAVE THEORY OF LIGHT . Explanation of rectilinear propagation . Two wave - surfaces in non - isotropic Principle of Huygens . Wave - front , 1079 . Spherical wave - surface in isotropic ...
... pitch , 1078 , pp . 1087-1098 . CHAPTER LXXIV . WAVE THEORY OF LIGHT . Explanation of rectilinear propagation . Two wave - surfaces in non - isotropic Principle of Huygens . Wave - front , 1079 . Spherical wave - surface in isotropic ...
Página 867
... pitch ; and this effect con- tinues after the movements have 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 ...
... pitch ; and this effect con- tinues after the movements have 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 ...
Página 896
... pitch , and character . Loudness . — The loudness of a sound considered subjectively is the intensity of the sensation with which it affects the organs of hearing . Regarded objectively , it depends , in the case of sounds of the same pitch ...
... pitch , and character . Loudness . — The loudness of a sound considered subjectively is the intensity of the sensation with which it affects the organs of hearing . Regarded objectively , it depends , in the case of sounds of the same pitch ...
Otras ediciones - Ver todas
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