Elementary Treatise on Natural Philosophy, Volumen4D. Appleton, 1891 |
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Página 866
... moved over are more conspicuous than the central parts , because the motion of the spring is slowest at its extreme positions . As the spring is lowered in the vice , so as to shorten the vibrating portion of it , its movements become ...
... moved over are more conspicuous than the central parts , because the motion of the spring is slowest at its extreme positions . As the spring is lowered in the vice , so as to shorten the vibrating portion of it , its movements become ...
Página 868
... move with the sand to the nodal lines , but will form little heaps in the centre of the vibrating segments ; and these heaps will be in a state of violent agitation , with more or less of gyratory movement , as long as the plate is ...
... move with the sand to the nodal lines , but will form little heaps in the centre of the vibrating segments ; and these heaps will be in a state of violent agitation , with more or less of gyratory movement , as long as the plate is ...
Página 873
... moving from a " to a ' . At intervening points between A and A1 , the layers will have various amounts of compression corre- sponding to the different positions of the plate in its forward move- ment . The greatest compression is at C ...
... moving from a " to a ' . At intervening points between A and A1 , the layers will have various amounts of compression corre- sponding to the different positions of the plate in its forward move- ment . The greatest compression is at C ...
Página 874
... moving from its most backward to its most advanced position , and back again . During this time , which is called the period of the vibrations , each particle of air goes through its complete cycle of changes , both as regards motion ...
... moving from its most backward to its most advanced position , and back again . During this time , which is called the period of the vibrations , each particle of air goes through its complete cycle of changes , both as regards motion ...
Página 875
... moves backwards and forwards about its original position , is illustrated by Fig . 604 , which represents , in an A B AB C C D E Fa D E F a A B C D E F a A BC D E F α A BCD E F a A B CD E F a A B CDE F a A B C DE F a A B C DEF a A B C D ...
... moves backwards and forwards about its original position , is illustrated by Fig . 604 , which represents , in an A B AB C C D E Fa D E F a A B C D E F a A BC D E F α A BCD E F a A B CD E F a A B CDE F a A B C DE F a A B C DEF a A B C D ...
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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