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