Diffraction and Diffusion

noun

• When light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands. .

(n.) The deflection and decomposition of light in passing by the edges of opaque bodies or through narrow slits, causing the appearance of parallel bands or fringes of prismatic colors, as by the action of a grating of fine lines or bars.

• (n.) The act of passing by osmosis through animal membranes, as in the distribution of poisons, gases, etc., through the body. Unlike absorption, diffusion may go on after death, that is, after the blood ceases to circulate.
• (n.) The act of diffusing or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion.

noun

• Physics) the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration. (
• The spread of social institutions (and myths and skills) from one society to another.
• The property of being diffused or dispersed.
  • synonyms: dissemination
• The act of dispersing or diffusing something.
  • usage: "the dispersion of the troops"; "the diffusion of knowledge"
  • synonyms: dispersion, dispersal, dissemination