Coil or COIL may refer to:
Geometry
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Helix
A helix () is a shape like a corkscrew or spiral staircase. It is a type of smooth space curve with tangent lines at a constant angle to a fixed axis. Helices are important in biology, as the DNA molecule is formed as two intertwined helices, ...
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Spiral
In mathematics, a spiral is a curve which emanates from a point, moving farther away as it revolves around the point.
Helices
Two major definitions of "spiral" in the American Heritage Dictionary are:[Coil (chemistry)
A coil, in chemistry, is a tube, frequently in spiral form, used commonly to cool steam originating from a distillation and thus to condense it in liquid form. Usually it is of copper or another material that conducts heat easily. However copper ...]
, a tube used to cool and condense steam from a distillation
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Coil spring
A selection of conical coil springs
The most common type of spring is the coil spring, which is made out of a long piece of metal that is wound around itself.
Coil springs were in use in Roman times, evidence of this can be found in bronze Fib ...
, used to store energy, absorb shock, or maintain a force between two surfaces
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Inductor
An inductor, also called a coil, choke, or reactor, is a passive two-terminal electrical component that stores energy in a magnetic field when electric current flows through it. An inductor typically consists of an insulated wire wound into a c ...
or coil, a passive two-terminal electrical component
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Electromagnetic coil
An electromagnetic coil is an electrical Electrical conductivity, conductor such as a wire in the shape of a wiktionary:coil, coil (spiral or helix). Electromagnetic coils are used in electrical engineering, in applications where electric curre ...
, formed when a conductor is wound around a core or form to create an inductor or electromagnet
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Induction coil
An induction coil or "spark coil" (archaically known as an inductorium or Ruhmkorff coil after Heinrich Rühmkorff) is a type of electrical transformer used to produce high-voltage pulses from a low-voltage direct current (DC) supply. p.98 To ...
, a type of electrical transformer used to produce high-voltage pulses from a low-voltage direct current supply
*** Ignition coil, used in internal combustion engines to create a pulse of high voltage for a spark plug
* Intrauterine device or coil, a contraceptive device
* Chemical oxygen iodine laser
* Coil, a binary digit or bit in some communication protocols such as Modbus
* COIL, the gene that encodes the protein coilin
* Coiled tubing
Music
* Coil (band), an English experimental band
* Coil (album), ''Coil'' (album), a 1997 album by Toad the Wet Sprocket
* "Coil", a song by Opeth from ''Watershed (Opeth album), Watershed''
Fictional entities
* The Coil, a fictional organization in the ''G.I. Joe'' universe
* Magnemite or Coil, a ''Pokémon'' character
* Coil, a crime lord from the web serial ''Worm (web serial), Worm''
People with the surname
* Liam Mac Cóil, Irish novelist
Other uses
* Coil (hieroglyph), an Egyptian hieratic hieroglyph
* Basket_weaving#Types, Coiled basketry
* Coiling (pottery), a method of creating pottery
* Coil (video game), ''Coil'' (video game), a video game by Edmund McMillen and Florian Himsl
* Turmoil or burden, as in mortal coil
* Coiling, a method for storing rope or cable
See also
* Helix (disambiguation)
* Loop (disambiguation)
* Spiral (disambiguation)
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