Viscosity

Short note

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Jan 31, 2026

Viscosity is a property of fluids that describes their resistance to flow and deformation. Higher viscosity means the fluid flows more slowly.

Examples:

  • Water has low viscosity (flows easily)
  • Honey has high viscosity (flows slowly)
  • Motor oil has medium viscosity

Viscosity is a critical parameter in Stokes’ Law, affecting how quickly particles settle in a liquid. Higher viscosity slows particle sedimentation.

Related: Sedimentation, Stokes’ Law