Diffusivity

This Diffusivity topic, formerly a disambiguation page, should provide at least a brief description of the topic and index all the notable examples that have Wikipedia articles.

Diffusivity is a rate of diffusion, a measure of the rate at which particles or heat or fluids can spread.

It is measured differently for different mediums.

Diffusivity may refer to:

• Thermal diffusivity, diffusivity of heat
• Diffusivity of mass:
  • Mass diffusivity, molecular diffusivity (often called "diffusion coefficient")
  • Eddy diffusion, eddy diffusivity
• Kinematic viscosity, characterising momentum diffusivity
• Magnetic diffusivity

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