Vibratory Motion and SoundGinn, Heath, 1882 - 135 pagina's |
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Pagina xi
... Formula for velocity in air . Effect of barometric and thermometric changes . 102. Open spaces , and speaking tubes . 103. Liquids and solids . 104. Strings 91 CHAPTER IX . REFLECTION OF SONOROUS UNDULATIONS . 105. Reflection.
... Formula for velocity in air . Effect of barometric and thermometric changes . 102. Open spaces , and speaking tubes . 103. Liquids and solids . 104. Strings 91 CHAPTER IX . REFLECTION OF SONOROUS UNDULATIONS . 105. Reflection.
Pagina 10
... tube drawn out to a fine point ) to the lower end of a pendulum vibrating in a small arc , and causing it to write upon a sheet of paper which is drawn by clock- work in a direction perpendicular to the plane of vibra- tion . 14. To ...
... tube drawn out to a fine point ) to the lower end of a pendulum vibrating in a small arc , and causing it to write upon a sheet of paper which is drawn by clock- work in a direction perpendicular to the plane of vibra- tion . 14. To ...
Pagina 67
... tube drawn out to a fine point below , and draws the curves upon a card laid beneath it . As the amplitudes of the vibrations of the pendulums gradually diminish , the curves become gradually smaller , and very beautiful effects of ...
... tube drawn out to a fine point below , and draws the curves upon a card laid beneath it . As the amplitudes of the vibrations of the pendulums gradually diminish , the curves become gradually smaller , and very beautiful effects of ...
Pagina 83
... tube drawn out to a point ) . The paper is drawn uniformly , in a direction perpendicular to the movement of the pen , by the revolution of a roller , carrying a toothed wheel , which is driven by a train of wheelwork deriving its ...
... tube drawn out to a point ) . The paper is drawn uniformly , in a direction perpendicular to the movement of the pen , by the revolution of a roller , carrying a toothed wheel , which is driven by a train of wheelwork deriving its ...
Pagina 94
... tube , or other tube of uniform bore , there is a little communication of sonorous energy to the sides , but unless the tube is very long this portion is small , and the greater part of the energy is transmitted through the enclosed ...
... tube , or other tube of uniform bore , there is a little communication of sonorous energy to the sides , but unless the tube is very long this portion is small , and the greater part of the energy is transmitted through the enclosed ...
Overige edities - Alles bekijken
Veelvoorkomende woorden en zinsdelen
acceleration amplitude antinode approximately arithmetical mean auxiliary circle beats called centre CHAPTER COMPOSITION compound compressions and extensions constant crank curve denote described diagonal difference of phase displacement distance double ellipse elliptic harmonic motion epoch equal equation extreme positions fixed force fork give HARMONOGRAPH Hence Hooke's law horizontal interval length longitudinal maximum mean position mean value middle point musical nodes number of vibrations obtained opposite directions pantagraph parallel parallelogram particle pendulum period of vibration perpendicular pipe pitch plane produce projection prongs pulleys pulse quarter period radii radius ratio rectangle resultant revolving right angles round S.H. motions sides simple harmonic motion simple harmonic vibration simple tones slot sonorous undulations sound statical energy stationary undulation straight line string tangent tion toothed wheel tube uniform circular motions velocity of propagation vertical vibrations per second vibratory motion vt-x waves travelling y=a cos
Populaire passages
Pagina 107 - ... continues to vary uniformly with the rate denoted by dy at the given point, the value of-— will become constant. The generatrix will now continue to move uniformly in the direction of the curve at the( given point, and therefore the value which -~ has at this point is that of the trigonometrical tangent of the inclination of the curve to the axis of x at this point. The line now described by the generatrix is called a tangent line to the...
Pagina 36 - Now we have shown above that a positive value of the functional determinant <pu\f/v — <pv^u means that Z2 is on the positive side of Zi, so that in this case Z moves in the positive sense (that is, in the direction from the positive axis of x to the positive axis of y) with increasing values of a. With a negative value Z moves in the opposite direction. Let us now suppose that the curves x = const. and y — const. in the uv plane intersect except on a certain curve where their direcu FIG.
Pagina 40 - LENGTH, is the distance from any particle, to the next particle that is in a similar position in its path, and is moving in the same direction.
Pagina 91 - Since the velocity of propagation of a wave through any medium varies directly as the square root of the coefficient of elasticity and inversely as the square root of the density...
Pagina 91 - ... in one direction and then in the opposite, a series of compressions and extensions are produced in alternate succession. But each compressed portion tends to relieve itself by expanding into the neighbouring air, which is thus in its turn compressed, and the extended portions in like manner tend to communicate extension.
Pagina 60 - ... the equation of a parabola, whose vertex is at a distance b from the central point of the vibrations, and focus at the distance ^ from the vertex.
Pagina 60 - Of the other curves, the most interesting is the symmetrical figure of 8 which corresponds to 8 = — and 8= — — , the path being the same for both these cases, but traced in opposite directions.
Pagina 19 - B (Fig. 10) revolve round the same circle with equal and opposite angular velocities, they will meet at both ends of one fixed diameter.
Pagina 102 - ... a reversed pulse, which travels along the string from this end to the other, where it is again reflected and reversed.