https://**en.wikipedia.org**/wiki/**Diffusion_equation**

The **diffusion equation** is a partial differential equation which describes density dynamics in a material undergoing diffusion. It is also used to describe processes ...

https://**en.wikipedia.org**/wiki/**Heat_equation**

The **heat equation** is a parabolic partial differential equation that describes the distribution of heat (or variation in temperature) in a given region over time.

www.life.illinois.edu/crofts/bioph354/diffusion1.html

Diffusion – useful equations. **Diffusion coefficient, D** D = (1/f)kT f - frictional coefficient k, T, - Boltzman constant, absolute temperature f = 6p h r

galileo.phys.virginia.edu/classes/311/notes/dimension/node8.html

Footnotes: 1 I prefer the term **diffusion equation**, since we are just describing the diffusion of heat. 2 For the mathematically sophisticated, I'll mention that the ...

**ocw.mit.edu**/courses/materials-science-and-engineering/3-205...

Steady-State Diffusion When the concentration field is independent of time and D is independent of c, Fick’! "2c=0 s second law is reduced to Laplace’s equation,

www.rpgroup.caltech.edu/~natsirt/aph162/diffusion_old.pdf

The **Diﬀusion Equation A Multi-dimensional Tutorial** c Tristan S. Ursell Department of Applied Physics, California Institute of Technology Pasadena, CA 91125

**www.csun.edu**/~lcaretto/me501b/diffusion.doc

The **diffusion equation** describes the diffusion of species or energy starting at an initial time, with an initial spatial distribution and progressing over time.

pauli.uni-muenster.de/tp/fileadmin/lehre/NumMethoden/WS0910/Script...

Chapter 7 The **Diffusion Equation** The **diffusionequation** is a partial differentialequationwhich describes density ﬂuc-tuations in a material undergoing diffusion.

scienceworld.wolfram.com/physics/**DiffusionEquation**.html

A partial differential equation of the form {\partial\psi\over\partial t} = \kappa\nabla^2\psi, where \kappa is called the diffusion coefficient. See also: Diffusion ...

www.cfm.brown.edu/people/gk/chap9/node1.html

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