What's the difference between
and
Enter two words to compare and contrast their definitions, origins, and synonyms to better understand how those words are related.

Opacity vs Luminance - What's the difference?

opacity | luminance |

As nouns the difference between opacity and luminance

is that opacity is (uncountable) the state or quality of being opaque, not allowing light to pass through while luminance is the quality of being luminous.

opacity

English

Noun

  • (uncountable) The state or quality of being opaque, not allowing light to pass through
    • We could not see the sandbar due to the opacity of the muddy water.
  • (uncountable) The state or quality of being inaccessible to understanding
    • The opacity of these decisions is troubling.
  • (optics, countable) A measure of relative impenetrability to electromagnetic radiation such as light.
    • The opacity of a clean glass window is near zero.

    Synonyms

    * opaqueness

    Coordinate terms

    * transparency

    luminance

    English

    Noun

    (wikipedia luminance) (-)
  • the quality of being luminous
  • the luminous flux emitted in a given direction divided by the product of the projected area of the source element perpendicular to the direction and the solid angle containing that direction, i.e. luminous intensity divided by unit area; measured in stilbs or apostilbs

    • Synonyms

    *photometric brightness

    See also

    *brightness