File:Pressure_exerted_by_collisions.svg · Wikimedia Commons · See Wikimedia Commons

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pressure

Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled gage pressure) is the pressure relative to the ambient pressure.

AI overview

Pressure is the force pushing down on a surface, spread out over an area—think of how your weight distributes across your feet versus across the tip of a needle. Understanding pressure matters because it helps explain everyday phenomena, from why sharp objects pierce easily to how air and liquids behave in different situations.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Physical quantity.name: Pressure
Physical quantity.image: Pressure exerted by collisions.svg
Physical quantity.image_size: 250px
Physical quantity.caption: Pressure exerted by particle collisions inside a closed container. The collisions that exert the pressure are highlighted in red.
Physical quantity.unit: pascal (Pa)
Physical quantity.baseunits: kg⋅m⋅s
Physical quantity.symbols: ,
Physical quantity.dimension: \mathsf{M} \mathsf{L}^{-1} \mathsf{T}^{-2}

via Wikipedia infobox

Research

1,556,032 papers

Cells under pressure - the relationship between hydrostatic pressure and mesenchymal stem cell chondrogenesis.ReviewEuropean cells & materials · 2019Pattappa G, Zellner J, Johnstone B et al.DOI: 10.22203/eCM.v037a22
Pressure measurement characteristics of a micro-transducer and balloon catheters.Physiological reports · 2021MacAskill W, Hoffman B, Johnson MA et al.DOI: 10.14814/phy2.14831
Pressure-induced shape-shifting of helical bacteria.Soft matter · 2023Pastrana CL, Qiu L, Armon S et al.DOI: 10.1039/d2sm01044e
Pressure breathing in fighter aircraft for G accelerations and loss of cabin pressurization at altitude--a brief review.ReviewCanadian journal of anaesthesia = Journal canadien d'anesthesie · 2003Lauritzsen LP, Pfitzner JDOI: 10.1007/BF03021042
Esophageal pressure as estimation of pleural pressure: a study in a model of eviscerated chest.BMC anesthesiology · 2024Florio G, Carlesso E, Mojoli F et al.DOI: 10.1186/s12871-024-02806-0
Internal fluid pressure influences muscle contractile force.Proceedings of the National Academy of Sciences of the United States of America · 2020Sleboda DA, Roberts TJDOI: 10.1073/pnas.1914433117
Pressure-induced changes on the morphology and gene expression in mammalian cells.Biology open · 2021Okamoto K, Watanabe TM, Horie M et al.DOI: 10.1242/bio.058544
High pressure endoscopic irrigation: impact on renal histology.International braz j urol : official journal of the Brazilian Society of Urology · 2021Loftus C, Byrne M, Monga MDOI: 10.1590/S1677-5538.IBJU.2020.0248

via PubMed

Wikidata facts

Image: Pressure exerted by collisions.svg

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Commons category: Pressure
Stack Exchange tag: physics.stackexchange.com/tags/pressure

Sources (5)

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~30 min read

Article

21 sections

Contents

Definition
Formula
Units
Examples
Scalar nature
Types
Fluid pressure
Applications
Explosion or deflagration pressures
Negative pressures
Surface pressure and surface tension
Gas pressure
Vapour pressure
Liquid pressure
Direction of liquid pressure
Kinematic pressure
Navier–Stokes equation with kinematic quantities
See also
Notes
References
External links

{{Infobox physical quantity | name = Pressure | image = Pressure exerted by collisions.svg | image_size = 250px | caption = Pressure exerted by particle collisions inside a closed container. The collisions that exert the pressure are highlighted in red. | unit = pascal (Pa) | baseunits = kg⋅m⋅s | symbols = , | derivations = | dimension = \mathsf{M} \mathsf{L}^{-1} \mathsf{T}^{-2} }}