Goniophotometry

Goniophotometry is a measurement technique used to assess the luminous and color distribution of light emitted from a source or reflected from a surface. The term is derived from "gonia," meaning angle, and "photometry," which refers to the measurement of light intensity. In goniophotometry, light measurements are taken at various angles, typically using a goniophotometer, which is an instrument that allows for precise positioning of the light source and the measurement device.