Definition of "luminance" []

  • The condition or quality of being luminous. (noun)
  • Physics The intensity of light per unit area of its source. (noun)
  • A state or quality of radiating or reflecting light (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

  • A measure (in candelas per square metre) of the brightness of a point on a surface that is radiating or reflecting light. It is the luminous intensity in a given direction of a small element of surface area divided by the orthogonal projection of this area onto a plane at right angles to the direction (noun) (c) HarperCollins Publishers Ltd 2016

Use "luminance" in a sentence
  • "The first thing I noticed was how bright the display looked-a testament to its luminance, which is measured at"
  • ""It has been suggested that double cones are used for achromatic (non-colour) tasks such as luminance, motion and polarization vision," Professor Marshall said."
  • "The "luminance" of the light slowly rises and falls."