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Luminance vs X - What's the difference?

luminance | x |

As a noun luminance

is the quality of being luminous.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

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

    x

    Translingual

    {{Basic Latin character info, previous=W, next=Y, image= (wikipedia X)

    Etymology 1

    Letter

  • The twenty-fourth letter of the .
    • See also
    (Latn-script)

    Cardinal number

    (mul-number)
  • The number 10.

    • Symbol

    (mul-symbol)
  • A symbol of the IPA, representing a voiceless uvular fricative.
  • strike

    • Etymology 2

    Possibly from skull and crossbones

    Symbol

    (mul-symbol)
    • Derived terms
    * XXX

    See also

    {{Letter , page=X , NATO=X-ray , Morse=–··– , Character=X , Braille=? }} Image:Latin X.png, Capital and lowercase versions of X , in normal and italic type Image:Fraktur letter X.png, Uppercase and lowercase X in Fraktur Roman numerals ----