Compression may refer to:
Physical science
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Compression (physics)
In mechanics, compression is the application of balanced inward ("pushing") forces to different points on a material or structure, that is, forces with no net sum or torque directed so as to reduce its size in one or more directions.Ferdinand ...
, size reduction due to forces
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Compression member, a structural element such as a column
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Compressibility
In thermodynamics and fluid mechanics, the compressibility (also known as the coefficient of compressibility or, if the temperature is held constant, the isothermal compressibility) is a measure of the instantaneous relative volume change of a ...
, susceptibility to compression
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Gas compression
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Compression ratio, of a combustion engine
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Compression (geology)
*Compression or
compressive strength
Information science
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Data compression
In information theory, data compression, source coding, or bit-rate reduction is the process of encoding information using fewer bits than the original representation. Any particular compression is either lossy or lossless. Lossless compressi ...
, reducing the data required for information
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Audio compression (data), reducing the data required for audio
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Bandwidth compression
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Compression artifact, defect in data due to compression
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Image compression, of digital images
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Video compression
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One-way compression function, a cryptographic primitive
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Dynamic range compression
Dynamic range compression (DRC) or simply compression is an audio signal processing operation that reduces the volume of loud sounds or amplifies quiet sounds, thus reducing or ''compressing'' an audio signal's dynamic range. Compression is ...
, reducing audio dynamic range
Medicine
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Brain compression, a medical condition
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Compression bandage
A bandage is a piece of material used either to support a medical device such as a dressing or splint, or on its own to provide support to or to restrict the movement of a part of the body. When used with a dressing, the dressing is applie ...
*Pressing on the lower abdominal area in an
intravenous pyelogram
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Cold compression therapy, for minor injuries
Other
*Amplifier
gain compression, due to nonlinearity
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Compression (dance), several techniques
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Compression (functional analysis) In functional analysis, the compression of a linear operator ''T'' on a Hilbert space to a subspace ''K'' is the operator
:P_K T \vert_K : K \rightarrow K ,
where P_K : H \rightarrow K is the orthogonal projection onto ''K''. This is a natural ...
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Compression (phonetics), running syllables together
See also
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*
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Compaction (disambiguation)
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Compress
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Compression garment
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Compressor (disambiguation)
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Decompression (disambiguation) Decompression has several meanings, some of which are covered by several articles:
* Data decompression, the action of reversing data compression
* Decompression (physics), the release of pressure and the opposition of physical compression
** Decom ...
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Expansion (disambiguation)
Expansion may refer to:
Arts, entertainment and media
* ''L'Expansion'', a French monthly business magazine
* Expansion (album), ''Expansion'' (album), by American jazz pianist Dave Burrell, released in 2004
* Expansions (McCoy Tyner album), ''Exp ...
{{disambiguation