1. A periodic motion which repeats itself after a definite interval of time. 2. Energetic agitation of concrete to assist in its consolidation, produced by mechanical oscillating devices at moderately high frequencies.
1. A periodic motion of the particles of an elastic body or medium in alternately opposite directions from the position of equilibrium when that equilibrium has been disturbed. 2.The action of vibrating; the state of being vibrated or in vibratory motion.
The movement of a pendulum or other oscillating element, limited by two consecutive extreme positions. The balance of a mechanical watch generally makes five or six vibrations per second (or 18,000 or 21,600 vibrations per hour); the balance of a high-frequency watch may make seven to 10 vibrations per second (or 25,200 to 36,000 vibrations per hour).
A repetitive motion back and forth past a central position. This motion can be felt or heard or both.
A movement back and forth. A form or mode of motion in which the moving particle occupies successive positions in recurrence.
a shaky motion; "the shaking of his fingers as he lit his pipe"
a motion that cannot make up its mind which way it wants to go A vice is a taxable virtue A victim of a cruel prank, Geordi puts a banana over his eyes
The periodic motion or oscillation of an element, device, or system.
Mechanical oscillation or motion about a reference point of equilibrium.
A specification referring to the ability of the oscillator to withstand, without performance degradation, a repetitive acceleration. Usually a specification is given for one or more frequency ranges MIL-PRF-55310D, 4.8.39).
A periodic motion or oscillation of an item that often causes an annoying motion or sound.
The oscillatory motion of a physical body. Localized vibration, such as hand-arm vibration, is produced by contact with powered tools or equipment or with vibrating structures. Whole-body vibration occurs while standing or seated in vibrating environments or objects, such as trucks or heavy machinery.
Movement of a pendulum or other oscillating element, limited by two consecutive extreme positions. The balance of a mechanical watch generally makes five or six vibrations per second (i.e. 18,000 or 21,600 per hour), but that of a high-frequency watch may make seven, eight or even ten vibrations per second (i.e. 25,200, 28,800 or 36, 000 per hour).
Energetic agitation of concrete to assist in its consolidation, produced by mechanical oscillating devices at moderately high frequencies. External vibration employs a device attached to the forms and is particularly applicable to the manufacture of precast items and for the vibration of tunnel lining forms. Internal vibration employs an element which can be inserted into the concrete; and is more generally used for cast-in-place construction.
A force which oscillates about some specified reference point. Vibration is commonly expressed in terms of frequency such as cycles per second (cps), Hertz (Hz), cycles per minute (cpm) or (rpm) and strokes per minute (spm). This is the number of oscillations which occurs in that time period. The amplitude is the magnitude or distance of travel of the force.
A rapid back and forth motion of a particle or solid.(Basic Science/Sound/vibration.htm)
Describes the movement of a pendulum or other oscillating element, limited by two consecutive extreme positions. The balance of a mechanical watch making five or six vibrations per second vibrates at 18,000 or 21,600 times per hour.
Movement of a pendulum or other oscillating bodies, limited by two consecutive extreme positions. In an alternate (pendulum or balance) movement, a vibration is a half of an oscillation (s.). The number of hourly vibrations corresponds to the frequency of a watch movement, determined by the mass and diameter of a balance (s.) and the elastic force of the balance spring. The number of vibrations per hour (vph) determines the breaking up of time (the "steps" of a second hand). For instance, 18,000 vph equals a vibration duration of 1/5 second; in the same way 21,600 vph = 1/6 second; 28,800 vph = 1/8 second; 36,000 vph = 1/10 second. Until the 1950s, wristwatches worked mostly at a frequency of 18,000 vph; later, higher frequencies were adopted to produce a lower percentage of irregularities to the rate. Today, the most common frequency adopted is 28,800 vph, which assures a good precision standard and less lubrication problems than extremely high frequencies, such as 36,000 vph.
Vibration is simply the oscillating motion of an object about a reference position. A pendulum set swinging to and fro or perhaps striking a thin ruler overhanging a desk, or rapping a bell, Figure 2-1, are all every day examples of vibration. The motion they generate is termed simple harmonic motion.
Vibration is a rapid back and forth motion of a particle or solid.
A Swedish massage stroke that includes oscillating, quivering, or trembling of tissues, performed quickly and repeatedly.
Vibration refers to an oscillation or sympathetic activity. Edgar Cayce often spoke of a subtle vibratory energy or force in the body which he called the "life-force" or lowest form of electrical vibration. Each organ of the body has a distinctive energy vibration signature. When an organ is deficient in this vibratory energy, disease sets in. The various electrotherapeutic appliances were recommended to rejuvenate the body by introducing vibratory energy into the body or to balance the body's own vibratory energies. Various medicinal solutions were also utilized in electrotherapy. Cayce said that the vibration of the medicine would enter the body rather than the chemical itself.
oscillation or periodic motion of a rigid or elastic body from equilibrium. Electric and pneumatic tools, such as screwdrivers, generate vibration that can cause injury over time.
Alternating mechanical motion of an elastic system, components of which are amplitude, frequency and phase.
A periodic motion in alternate directions.
An oscillating change in displacement, with respect to a fixed reference.
Vibration refers to mechanical oscillations about an equilibrium point. The oscillations may be periodic such as the motion of a pendulum or random such as the movement of a tire on a gravel road.
