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

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圧力

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}