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This simple harmonic vibration is characterized by certain important properties.
The maximum displacement from equilibrium (that is, here the state of zero
displacement) is called the amplitude of the vibration. In the drawing it is A. The
Such a sustained vibration is called a self-excited vibration because its frequency
depends on its own constitution and not on the external energy supply. An
example is the vibration of a violin string produced and maintained by a steady ...
This scheme can also be employed to damp torsional vibrations in the drive
shafts of turbines. ... basically a physical pendulum with a very massive bob, or
hanging weight, so suspended as to respond to any vibration in the earth in its
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review