brightness

brightness, in physics, the subjective visual sensation related to the intensity of light emanating from a surface or from a point source (see luminous intensity).

Citation Information

Article Title: brightness

Website Name: Encyclopaedia Britannica

Publisher: Encyclopaedia Britannica, Inc.

Date Published: 04 June 2013

URL: https://www.britannica.comhttps://www.britannica.com/science/brightness-light

Access Date: February 22, 2025