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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 wave along the length of a stretched Slinky toy, where the distance between coils increases and decreases, is a good visualization. Real-world examples include sound waves (vibrations in pressure, a particle of displacement, and particle velocity propagated in an elastic medium) and seismic P waves (created by earthquakes and explosions).
Periodic waves oscillate repeatedly about an equilibrium (resting) value at some frequency. When the entire waveform moves in one direction, it is said to be a travelling wave; by contrast, a pair of superimposed periodic waves traveling in opposite directions makes a standing wave. In a standing wave, the amplitude of vibration has nulls at ...
Kerr and Dold showed that such disturbances exist with finite amplitude, thus making the solution an exact to Navier–Stokes equations. Introducing a stream function for the disturbance velocity components, the equations for disturbances in vorticity-streamfunction formulation can be shown to reduce to
Muller used the new platform to produce editorial videos that discuss such topics as filmmaking, showcasing behind-the-scenes footage, and for viewer reactions to popular Veritasium videos. [27] In 2017, Muller began uploading videos on his newest channel, Sciencium, which is dedicated to videos on recent and historical discoveries in science. [28]
Video distribution has standardized on 75-ohm coaxial and 124-ohm balanced cable. Incident Light The direct light that falls on an object. Insertion Loss The signal strength loss when a piece of equipment is inserted into a line. Interference Disturbance to the normal or expected operation electronic devices, equipment and systems.
The company liked her ideas, and Slinky Dog and Slinky Train were added to the company's product line. Slinky Dog, a small plastic dog whose front and rear ends were joined by a metal Slinky, debuted in 1952. Malsed received royalties of $60,000 to $70,000 annually for 17 years on her patent for the Slinky pull-toy idea, but never visited the ...
Periodic Videos (also known as The Periodic Table of Videos) is a video project and YouTube channel on chemistry. It consists of a series of videos about chemical elements and the periodic table , with additional videos on other topics in chemistry and related fields.