solenoid
Noun
Meaning
An electrodynamic spiral having the conjuctive wire turned back along its axis, so as to neutralize that component of the effect of the current which is due to the length of the spiral, and reduce the whole effect to that of a series of equal and parallel circular currents. When traversed by a current the solenoid exhibits polarity and attraction or repulsion, like a magnet.
Source: Webster's dictionarySynonyms
Hypernyms
Phrases with the word
Examples
Ampère's law is always valid for steady currents and can be used to calculate the B -field for certain highly symmetric situations such as an infinite wire or an infinite solenoid.
A plasma inside the solenoid will experience a force toward a guiding center of its orbit which moves only parallel to the applied field.
Bending a wire into multiple closely spaced loops to form a coil or " solenoid " enhances this effect.
Early pinball machines typically had full solenoid current passing through trigger switches for all types of solenoids, from kickers to pop bumpers to the flippers themselves.
Contact had an electrically powered solenoid to propel the ball out of a bonus hole in the middle of the playfield.
Another solenoid rang a bell to reward the player.