Pressure (the symbol: p) is the force per unit area applied in a direction perpendicular to the surface of an object. Gauge pressure (also spelled gage pressure) is the pressure relative to the local atmospheric or ambient pressure.

Contents

• 1 Definition
  • 1.1 Formula
  • 1.2 Units
  • 1.3 Examples
  • 1.4 Scalar nature
• 2 Types
  • 2.1 Fluid pressure
    • 2.1.1 Applications
  • 2.2 Explosion or deflagration pressures
  • 2.3 Negative pressures
  • 2.4 Stagnation pressure
  • 2.5 Surface pressure
  • 2.6 Pressure of an ideal gas
  • 2.7 Vapor pressure
  • 2.8 Liquid pressure or pressure at depth
• 3 See also
• 4 Notes
• 5 References
• 6 External links

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