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Any of the simple sinusoidal components into which a periodic quantity may be resolved

Related Terms

JUMP PHENOMENON

A phenomenon occurring in a nonlinear system subjected to a sinusoidal input at constant frequency, in which the value of the amplitude of the forced oscillation can jump upward or downward as the input amplitude is varied through either of two fixed values, and the graph of the forced amplitude versus the input amplitude follows a hysteresis loop.

HARMONIC

1. A sinusoidal quantity having a frequency that is an integral multiple of the frequency of a periodic quantity to which it is related. 2. A signal having a frequency which is an integral multiple of the fundamental frequency.

CONTINUOUS WAVE

1. Electromagnetic radiation of a constant amplitude and frequency. 2. Radio waves, the successive sinusoidal oscillations of which are identical under steady-state conditions.

DAMPED WAVE

1. A wave such that, at every point, the amplitude of each sinusoidal component is a decreasing function of time. 2. A wave in which the amplitudes of successive peaks (crests) progressively diminish

PURE TONE

A sound produced by a sinusoidal acoustic oscillation. Also called PURE SOUND.

SINUSOIDAL

Of or pertaining to a sine wave or sinusoid.

AUTOMATIC-CONTROL FREQUENCY RESPONSE

The steady-state output of an automatic control system for sinusoidal inputs of varying frequency.

COMPLEX PERMITTIVITY

A property of a dielectric, equal to 0(C/C0), where C is the complex capacitance of a capacitor in which the dielectric is the insulating material when the capacitor is connected to a sinusoidal voltage source, and C0 is the vacuum capacitance of the capacitor.

COMPLEX FREQUENCY

A complex number used to characterize exponential and damped sinusoidal motion in the same way that an ordinary frequency characterizes simple harmonic motion; designated by the constant s corresponding to a motion whose amplitude is given by Aest, where A is a constant and t is time. complex impedance See electrical impedance; impedance.

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