Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 860
... consists of a fundamental simple vibration and its harmonics ; and every musical note consists of a fundamental tone and its harmonics , 925. Helm- holtz's resonators , 926. Vowel - sounds , 927. Phonograph , 928 , .. pp . 927-940 ...
... consists of a fundamental simple vibration and its harmonics ; and every musical note consists of a fundamental tone and its harmonics , 925. Helm- holtz's resonators , 926. Vowel - sounds , 927. Phonograph , 928 , .. pp . 927-940 ...
Página 870
... consist of a confused succession of sounds , the changes being so rapid that the ear is unable to identify any particular note . This kind of noise may be illustrated by sliding the finger along a violin - string , while the bow is ...
... consist of a confused succession of sounds , the changes being so rapid that the ear is unable to identify any particular note . This kind of noise may be illustrated by sliding the finger along a violin - string , while the bow is ...
Página 875
... consists of a condensed portion , and a rarefied portion , which are distinguished from each other in Fig . 601 by different tints , the dark shading being intended to represent condensation . 870. Nature of Undulations . The ...
... consists of a condensed portion , and a rarefied portion , which are distinguished from each other in Fig . 601 by different tints , the dark shading being intended to represent condensation . 870. Nature of Undulations . The ...
Página 888
... consists of a long tube ( sometimes 6 feet long ) , slightly tapering towards the speaker , furnished at this end with a hollow mouth - piece , which nearly fits the lips , and at SPEAKING AND HEARING TRUMPETS . 889 the other with a. Fig ...
... consists of a long tube ( sometimes 6 feet long ) , slightly tapering towards the speaker , furnished at this end with a hollow mouth - piece , which nearly fits the lips , and at SPEAKING AND HEARING TRUMPETS . 889 the other with a. Fig ...
Página 889
... consists simply of a bell with such a membrane stretched across its outer end , while its inner end communicates with the ear by an indian- rubber tube with an ivory end - piece . These light membranes are peculiarly susceptible of ...
... consists simply of a bell with such a membrane stretched across its outer end , while its inner end communicates with the ear by an indian- rubber tube with an ivory end - piece . These light membranes are peculiarly susceptible of ...
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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