perfect diffusion

perfect diffusion

1. (in lighting) The condition in which light flux is uniformly scattered in all directions so that the luminance (radiance) is equal in all directions.
2. (in room acoustics) The condition in which sound waves
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in classic literature ?
We meet as water meets water, or as two currents of air mix, with perfect diffusion and interpenetration of nature.
Chanel's Perfect Diffusion Complex combines hemispheric powders that diffuse and reflect light, and soft focus powders diminish the appearance of pores.