# oscillation

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## Oscillation

Any effect that varies in a back-and-forth or reciprocating manner. Examples of oscillation include the variations of pressure in a sound wave and the fluctuations in a mathematical function whose value repeatedly alternates above and below some mean value.

The term oscillation is for most purposes synonymous with vibration, although the latter sometimes implies primarily a mechanical motion. The alternating current and the associated electric and magnetic fields are referred to as electric (or electromagnetic) oscillations.

If a system is set into oscillation by some initial disturbance and then left alone, the effect is called a free oscillation. A forced oscillation is one in which the oscillation is in response to a steadily applied periodic disturbance.

Any oscillation that continually decreases in amplitude, usually because the oscillating system is sending out energy, is spoken of as a damped oscillation. An oscillation that maintains a steady amplitude, usually because of an outside source of energy, is undamped. See Anharmonic oscillator, Damping, Forced oscillation, Harmonic oscillator, Vibration

## oscillation

[‚äs·ə′lā·shən]
(control systems)
(mathematics)
The oscillation of a real-valued function on an interval is the difference between its least upper bound and greatest lower bound there.
The oscillation of a real-valued function at a point x is the limit of the oscillation of the function on the interval [x-e, x + e ] as e approaches 0. Also known as saltus.
(physics)
Any effect that varies periodically back and forth between two values.
References in periodicals archive ?
This stimulation can be pivotal or oscillating (vibrating from side to side) or lineal (vibrating up and down).
Haver & Boecker offers the Pulse vibration analysis program to monitor the ongoing health of vibrating screens through real-time views, logged reports and data analysis.
IT FEATURES the same vibrating technology as Pulseroll's foam rollers, but this, as the name suggests, is more ball-shaped.
Existing literature points to a variable location of the foveae in relation to the vibrating line.
where I is the number of vibrating targets (it can also include stationary body points by just setting r or [f.sub.m] to zero and can include no target by setting [a.sub.i] to zero), [a.sub.i] denotes the scattering coefficient of the ith target, and
Simulation model of the movement of the vibrating system
Everything under the sun had been tried to stop it from vibrating.
The vibrating smartpen, designed by a Germany-based company called Lerntift, aims to help youths learn how to write.
Flex-Mat 3 vibrating wire technology, combined with this side-by-side wire design, increases screen capacity and throughput, while eliminating pegging on top decks and the "popcorn effect" often seen when single wire is used to screen high-impact and heavy materials.
The TCL 200 Digital Alarm Clock is a flashing, voice output digital alarm clock with a vibrating signal and amplified alarm, and it is a visual and vibrating telephone signal indicator.
At the other end, the vibrating string causes the bottom of the second cup to vibrate, making sound waves that travel to your friend's ear.
In industrial activities, many times, it is necessary to be used some vibrating devices to move parts or components.

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