moving coil
41pahoehoe lava coil — USGS PHOTO GLOSSARY OF VOLCANIC TERMS Lava coils are spiral or scroll shaped features that form along slow moving shear zones in a flow; for example, along the margins of a small channel. The direction of flow can be determined from a lava coil.… …
42Field coil — A field coil is a component of an electro magnetic machine, typically a rotating electrical machine such as a motor or generator. A current carrying coil is used to generate a magnetic field. Magnetic fields require a continuous circuit, thus… …
43Mortal Coil: Adrenalin Intelligence — Developer(s) Crush Software Publisher(s) Virgin Interactive Entertainment Platform(s) MS DOS …
44Resistance coil — Resistance Re*sist ance ( ans), n. [F. r[ e]sistance, LL. resistentia, fr. resistens, entis, p. pr. See {Resist}.] 1. The act of resisting; opposition, passive or active. [1913 Webster] When King Demetrius saw that . . . no resistance was made… …
45Pole piece — Moving coil meter movement with the nearer pole piece partly cut away A pole piece is a structure composed of material of high magnetic permeability that serves to direct the magnetic field produced by a magnet. A pole piece attaches to and in a… …
46Galvanometer — D Arsonval/Weston galvanometer movement with the moving coil shown in red. A galvanometer is a type of ammeter: an instrument for detecting and measuring electric current. It is an analog electromechanical transducer that produces a rotary… …
47Loudspeaker — For other uses, see Loudspeaker (disambiguation). An inexpensive, low fidelity 3½ inch speaker, typically found in small radios …
48Magnetic cartridge — An Audio Technica AT F3 MC cartridge A magnetic cartridge is a transducer used for the playback of gramophone records on a turntable or phonograph. It converts mechanical vibrational energy from a stylus riding in a spiral record groove into an… …
49Headphones — For other uses, see Headphones (disambiguation). Sennheiser HD555 headphones, used in audio production environments …
50Hard disk drive — Hard drive redirects here. For other uses, see Hard drive (disambiguation). Hard disk drive Mechanical interior of a modern hard disk drive Date invented 24 December 1954 [1] …
