Pressure
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| - | '''Blaise Pascal''' ([[June 19]] [[1623]] – [[August 19]] [[1662]]) was a [[France|French]] [[mathematician]], [[physicist]], and [[religious philosopher]]. He was a [[child prodigy]] who was educated by his father. Pascal's earliest work was in the natural and applied [[science]]s where he made important contributions to the construction of mechanical [[calculator]]s, the study of [[fluid]]s, and clarified the concepts of [[pressure]] and [[vacuum]] by generalizing the work of [[Evangelista Torricelli]]. Pascal also wrote powerfully in defense of the [[scientific method]]. | ||
| - | He was a mathematician of the first order. Pascal helped create two major new areas of research. He wrote a significant treatise on the subject of [[projective geometry]] at the age of sixteen and corresponded with [[Pierre de Fermat]] from 1654 and later on [[probability theory]], strongly influencing the development of modern [[economics]] and [[social sciences|social science]]. | + | # The amount of [[force]] that is applied over a given [[area]] divided by the size of this area. |
| - | + | #: Units | |
| - | Following a [[mysticism|mystical]] experience in late 1654, he abandoned his scientific work and devoted himself to philosophy and [[theology]]. His two most famous works date from this period: the ''[[Lettres provinciales]]'' and the ''[[Pensées]]''. | + | #:* [[SI]]: [[pascal]] (Pa) (1 pascal equals 1 [[newton]] per [[square metre]]) |
| - | + | #:* Others: [[bar]] (1 bar equals 100000 pascals), [[barye]] (Ba) (1 barye equals 0.1 pascal), [[pound]]s per square [[inch]] ([[psi]], [[lbf]]/[[in]]<sup>2</sup>, [[lb]]/[[in]]<sup>2</sup>), [[torr]], [[mmHg]], [[atmosphere]] ([[atm]]) | |
| - | Pascal suffered from ill-[[health]] throughout his life and died two months after his 39th birthday. | + | # A [[pressing]]; a [[force]] applied to a [[surface]]. |
| + | #: ''Apply '''pressure''' to the wound to stop the bleeding.'' | ||
| + | # [[mental|Mental]] [[strain]] caused by one's own or others' [[expectation]]s on one's own [[performance]] | ||
| + | #: ''She has been under '''pressure''' lately because her boss expects her to get the job done two weeks early.'' | ||
| + | #: '''Synonyms''' - [[under the pump]], [[under the gun]] | ||
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- The amount of force that is applied over a given area divided by the size of this area.
- A pressing; a force applied to a surface.
- Apply pressure to the wound to stop the bleeding.
- Mental strain caused by one's own or others' expectations on one's own performance
- She has been under pressure lately because her boss expects her to get the job done two weeks early.
- Synonyms - under the pump, under the gun
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