Question

What is fourier’s law of heat conduction & fick’s law of diffusion.

Answer 1

Fourier's law:

The law of heat conduction, also known as Fourier's law, states that the rate of heat transfer through a material is proportional to the negative gradient in the temperature and to the area, at right angles to that gradient, through which the heat flows.

Fick's 1st law of diffusion:

Diffusion occurs in response to a concentration gradient expressed as the change in concentration due to a change in position, . The local rule for movement or flux J is given by Fick's 1st law of diffusion: ... The flux J is driven by the negative gradient in the direction of increasing x.

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