1. A little physics, and a few definitions
1.1 Vibrations
Vibration" refers to the oscillation of an elastic medium around its equilibrium position, involving three fundamental quantities:
the kinetic energy of the medium set in vibratory motion ;
the restoring energy resulting from the elasticity of the medium distorted by the vibration ;
the frequency of oscillation, which is the number of deformation cycles in one second, and whose unit is the Hertz, noted Hz. The unit 1 Hz corresponds to a sinusoidal vibration with a period equal to one second. A vibration of 100 Hz therefore corresponds to a sinusoid with a period of 0.01 seconds.
Vibrations therefore affect all elastic...
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A little physics, and a few definitions
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