what is pulse? (in physics.....) (sound)......
Answers
A pulse is more time-space confined, while a wave, if not explicitly specific, is more of a spreading state. So, a pulse usually has a spectum distribution to maintain its confined profile, and it may have different so-called modes in its time-space distribution. These modes may change during its propagation of the pulse.
In physics, a pulse is a generic term describing a single disturbance that moves through a transmission medium. This medium may be vacuum (in the case of electromagnetic radiation) or matter, and may be indefinitely large or finite.
A pulse is a single disturbance while a periodic wave is a continually oscillating motion. There is a close connection between simple harmonic motion and periodic waves; in most periodic waves, the particles in the medium experience simple harmonic motion.
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==> A pulse is a burst of current, voltage, or electromagnetic field energy.