Turntable anti-skating
Encyclopedia
Turntable anti-skating is a feature used in phonograph
turntables to prevent skating of the tonearm.
While the angular
velocity
is constant, the peripheral velocity is not. The angle which the tonearm rests on the record is also different, being small at the beginning of the record but increasing by the end. This increase tends to draw the tonearm toward the center of the record and distort the balance of the sound. To prevent this, a small force is applied at the tonearm when it is near the center. This usually consists of a small counterweight adjustable by a knob.
Gramophone record
A gramophone record, commonly known as a phonograph record , vinyl record , or colloquially, a record, is an analog sound storage medium consisting of a flat disc with an inscribed, modulated spiral groove...
turntables to prevent skating of the tonearm.
While the angular
Angular
The angular is a large bone in the lower jaw of amphibians and reptiles , which is connected to all other lower jaw bones: the dentary , the splenial, the suprangular, and the articular...
velocity
Velocity
In physics, velocity is speed in a given direction. Speed describes only how fast an object is moving, whereas velocity gives both the speed and direction of the object's motion. To have a constant velocity, an object must have a constant speed and motion in a constant direction. Constant ...
is constant, the peripheral velocity is not. The angle which the tonearm rests on the record is also different, being small at the beginning of the record but increasing by the end. This increase tends to draw the tonearm toward the center of the record and distort the balance of the sound. To prevent this, a small force is applied at the tonearm when it is near the center. This usually consists of a small counterweight adjustable by a knob.