Compression 38808 224786939 2008-07-10T12:20:54Z JAnDbot 1725149 robot Removing: io, ja, uk Modifying: da, fr, nl {{wiktionarypar|compression|compressor}} '''Compression''' may refer to: In '''physical science''': *[[Physical compression]], the result of the subjection of a material to compressive stress (the opposite of tension) **[[Compression member]], a class of structural elements, of which a column is the most common specific example ** Compressibility, the reciprocal of the [[bulk modulus]] (typically for solids) *[[Gas compression]], raising the pressure and reducing the volume of gases **[[Compression ratio]], a number that predicts the performance of any internal-combustion engine ** [[Compressibility]], a measure of volume change resulting from pressure (typically for fluids) *[[Compression (geology)]], a system of forces that tend to decrease the volume of or shorten rocks In '''information science''': *[[Data compression]], the process of encoding information using fewer bits **[[Image compression]] **[[Audio data compression]] **[[Video compression]] ***[[Compression artifact]], noticeable defects in audio or video that has been compressed **[[Bandwidth compression]], in telecommunications *[[Gain compression]], in electronic amplifiers, a result of device non-linearity *[[Audio level compression]], usually artificially introduced gain compression to improve the perceived quality of audio In '''other sciences and technologies''': *Compression, in [[zoology]] and [[paleontology]], refers to when an animal, or part of an animal, is shorter or narrower compared with other animals in the same group; e.g. the body of a lizard may be ''compressed'' (flattened) so it can better fit into crevices under rocks *[[Compression (functional analysis)]], in mathematics *[[Bandage#Compression bandage|Compression bandage]], designed to reduce the flow of blood ==See also== *[[Compressor]] (disambiguation) *[[compress]], a UNIX program *[[Compaction]] *[[Decompression]] *[[Expansion]] *[[Compression shorts]] {{disambig}} [[cs:Komprese]] [[da:Komprimering]] [[de:Kompression]] [[fr:Compression]] [[ko:압축]] [[it:Compressione]] [[nl:Compressie]] [[pl:Kompresja]] [[pt:Compressão]] [[ru:Сжатие]]