Editing Diffusion (disambiguation)

{{wiktionary|diffusion}}

'''[[Diffusion]]''' is a time-dependent random process causing a spread in space.

'''Diffusion''' may also refer to:
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==Physical sciences==
* [[Molecular diffusion]], spontaneous dispersion of mass (distinct from migration, caused by an external force)
* [[Conduction of heat]]
* [[Momentum diffusion]]
* [[Diffusion equation]]
** [[Heat equation]]
** [[Schrödinger equation]]
* [[Eddy diffusion]]

===More specific meanings ===
* [[Anomalous diffusion]], the movement of particles from a region of lower concentration to a region of higher concentration
* [[Diffusion MRI]]
* [[Diffusion (acoustics)]], sound waves
* [[Atomic diffusion]]
* [[Brownian motion]]
* [[Collective diffusion]]
* [[Facilitated diffusion]]
* [[Effusion]] of a gas through small holes
* [[Gaseous diffusion]]
* [[Itō diffusion]]
* [[Knudsen diffusion]] of particles from very small containers
* [[Osmosis]], the movement of molecules through a membrane
* [[Reverse osmosis]], a process to separate unwanted particles from a fluid
* [[Photon diffusion]], an optical effect
** [[Diffuse reflection]], the reflection of light from an uneven or granular surface
* [[Reverse diffusion]], the movement of particles from a region of lower concentration to a region of higher concentration
* [[Rotational diffusion]]
* [[Self-diffusion]]
* [[Surface diffusion]]
* [[Thermodiffusion]]

==Social sciences==
* [[Diffusion of innovations]] within a society or a culture or between them
* [[Lexical diffusion]] within a culture
* [[Trans-cultural diffusion]] of culture items between cultures

==Technology ==
* [[Diffusion (cryptography)]], the spreading of influence of bits in a cipher
* [[Error diffusion]] in image processing
* [[Diffusion model]] in machine learning media or text generation.

==Other uses==
* [[Diffusion (business)]], the process by which a new idea or new product is accepted by the market
* [[Diffusion line]], a secondary line of merchandise created by a high-end fashion designer
* [[Diffusion Pharmaceuticals]], a drug development company
* [[Diffusion process]], in probability theory the solution to a stochastic differential equation
* [[Diffusion of responsibility]]
* [[Society for the Diffusion of Useful Knowledge]]
* ''Diffusion Science Radio Show'', a science radio show and podcast on [[2SER]] in Sydney
* [[Diffusion Records]], an independent record label
* [[Sound diffusion]], a performance practice in electronic music

==See also==
* [[Diffuser (disambiguation)]]
* [[Diffuse nebula]]
* [[Migration (disambiguation)]]

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