## Diffusion

**Diffusion** is one of several transport phenomena that occur in nature. A distinguishing feature of diffusion is that it results in mixing or mass transport without requiring bulk motion. Thus, diffusion should not be confused with convection or advection, which are other transport mechanisms that use bulk motion to move particles from one place to another. In Latin, "diffundere" means "to spread out".

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### Some articles on diffusion:

Convection–

... The convection–

**diffusion**Equation... The convection–

**diffusion**equation is a combination of the**diffusion**and convection (advection) equations, and describes physical phenomena where particles, energy, or other physical quantities are ... Depending on context, the same equation can be called the advection–**diffusion**equation, drift–**diffusion**equation, Smoluchowski equation (after Marian ...Surface

... Surface

**Diffusion**- Kinetics... Surface

**diffusion**kinetics can be thought of in terms of adatoms residing at adsorption sites on a 2D lattice, moving between adjacent (nearest-neighbor) adsorption ... dependent on temperature and Ediff, the potential energy barrier to**diffusion**... Ediff must be smaller than the energy of desorption for**diffusion**to occur, otherwise desorption processes would dominate ...**Diffusion**in Physics - Other Types of

**Diffusion**

... Anisotropic

**diffusion**, also known as the Perona-Malik equation, enhances high gradients Anomalous

**diffusion**, in porous medium Atomic

**diffusion**, in ... Knudsen

**diffusion**of gas in long pores with frequent wall collisions Momentum

**diffusion**ex ... the

**diffusion**of the hydrodynamic velocity field Photon

**diffusion**Random walk, model for

**diffusion**Reverse

**diffusion**, against the concentration gradient, in phase separation Rotational

**diffusion**...

### More definitions of "diffusion":

- (
*noun*): The property of being diffused or dispersed.

Synonyms: dissemination

- (
*noun*): (physics) the process of diffusing; the intermingling of molecules in gases and liquids as a result of random thermal agitation.

- (
*noun*): The spread of social institutions (and myths and skills) from one society to another.

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