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Fick's laws of diffusion

German: Fick'sches Diffusionsgesetz

1 Definition

The Fick's laws of diffusion is used to calculate the diffusion flux of a gas through a membrane. Most important in human beings is the gas exchange at the lung through blood–air barrier.

2 Formula

J=ΔC × A × D/L
  • J = diffusion flux
  • ΔC = concentration gradient
  • A = surface area
  • D = diffusion coefficient
  • L = diffusion path

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