Diffusion (disambiguation)

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

Diffusion may also refer to:

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