GEOG 597i
Critical Geospatial Thinking and Applications

Dispersal and Diffusion

The word diffusion refers to the ways in which ideas, innovations, and other phenomena spread over time and space. Over the course of thousands of years, human adaptations to the natural environment have been passed from one individual to another and from one culture to another. In general, as the outward distance from the point of origin of an innovation grows greater, its diffusive power grow weaker. Geographers call this spatial phenomena distance decay.