Definition Of Diffusion Wikipedia
D is the diffusion coefficient or diffusivity.
Definition of diffusion wikipedia. Physics the scattering of light by reflection from a rough surface or by passage through a translucent medium. Diffusion is the net movement of anything for example atom ions molecules from a region of higher concentration to a region of lower concentration. The book was first published in 1962 and is now in its fifth edition 2003. Diffusion usually happens in a solution in gas or in a liquid.
Diffusion of innovations is a theory that seeks to explain how why and at what rate new ideas and technology spread. Diffusion is a process where molecules of a material move from an area of high concentration where there are many molecules to an area of low concentration where there are fewer molecules until it has reached equilibrium molecules evenly spread. Diffusion is the movement of a solute in a solvent which is controlled by a gradient in concentration. Cobuild key words for chemical engineering.
Noun diffusion countable and uncountable plural diffusions the act of diffusing or dispersing something or the property of being diffused or dispersed. Its dimension is area per unit time. Since the word diffusion is derived from the latin word meaning to spread out then this would confine the correct use of the word diffusion to processes involving something moving from an area of high concentration to an area of lower concentration. Diffusion maps is a dimensionality reduction or feature extraction algorithm introduced by coifman and lafon which computes a family of embeddings of a data set into euclidean space often low dimensional whose coordinates can be computed from the eigenvectors and eigenvalues of a diffusion operator on the data.
Diffusion is the movement of a substance from an area of higher concentration to an area of lower concentration. Everett rogers a professor of communication studies popularized the theory in his book diffusion of innovations. Diffusion of a solute in a solvent is caused by a concentration gradient.