The scattering of light by reflection from a rough surface, or by passage through a translucent medium.
The gradual spread and adoption of goods or services.
Exchange of airborne media between regions in space in an apparently random motion of a small scale.
The spread of cultural or linguistic practices, or social institutions, in one or more communities.
The movement of water vapor from regions of high concentration (high water vapor pressure) toward regions of lower concentration.
The intermingling of the molecules of a fluid due to random thermal agitation.
The act of diffusing or dispersing something, or the property of being diffused or dispersed; dispersion.
The shooting forth of anything from a point or surface, like diverging rays of light.
The transfer of energy via radiation.
The process of radiating waves or particles.
A rapid diversification of an ancestral species into many new forms.
Radioactive energy.