Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 873
... corresponding to the back- ward movement of the plate from a to a " . As the plate goes on vibrating , these compressions and rarefactions continue to be propa- gated through the tube in alternate succession . The greatest com- pression ...
... corresponding to the back- ward movement of the plate from a to a " . As the plate goes on vibrating , these compressions and rarefactions continue to be propa- gated through the tube in alternate succession . The greatest com- pression ...
Página 878
... corresponding to successive wave - lengths are of equal mass , and their movements are precisely alike , except in so far as they are interfered with by friction . Hence sound is transmitted through tubes to great distances with but ...
... corresponding to successive wave - lengths are of equal mass , and their movements are precisely alike , except in so far as they are interfered with by friction . Hence sound is transmitted through tubes to great distances with but ...
Página 882
... corresponds to a pressure of 1033 x 981 dynes per sq . cm .; and the expression for the velocity in centimetres per second is v = P 1.41 = D √ 1.41 1033 x 981 ⚫001293 = 33240 nearly ; that is , 332-4 metres per second , or 1093 feet ...
... corresponds to a pressure of 1033 x 981 dynes per sq . cm .; and the expression for the velocity in centimetres per second is v = P 1.41 = D √ 1.41 1033 x 981 ⚫001293 = 33240 nearly ; that is , 332-4 metres per second , or 1093 feet ...
Página 886
... corresponding reflected ray ; and it is obvious , from the symmetrical position of the points O O ' , that these two rays are equally in- clined to the surface , or the angles of incidence and reflection are equal . a Fig . 609 ...
... corresponding reflected ray ; and it is obvious , from the symmetrical position of the points O O ' , that these two rays are equally in- clined to the surface , or the angles of incidence and reflection are equal . a Fig . 609 ...
Página 897
... corresponds to eleva- tion of pitch . Period and frequency are reciprocals . For example , if the period of each ... corresponding to the note . Hence wave - length may be taken as a measure of pitch , pro- vided the medium be given ...
... corresponds to eleva- tion of pitch . Period and frequency are reciprocals . For example , if the period of each ... corresponding to the note . Hence wave - length may be taken as a measure of pitch , pro- vided the medium be given ...
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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