Ficks law of diffusionFick's Law of Diffusion
states that the rate of diffusion
of a gas
across a fluid membrane
Fick's law is also important in radiation transfer equations. However, in this context it
becomes inaccurate when the diffusion constant is low and the radiation becomes limited
by the speed of light rather than by the resistance of the material the radiation is
flowing through. In this situation, one can use a flux limiter.
The exchange rate of a gas across a fluid membrane can be determined by using this law together with Graham's law.
- See also : lung -- alveoli