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S vs Luminosity - What's the difference?

s | luminosity |

As a letter s

is the letter s with a.

As a noun luminosity is

(uncountable) the state of being luminous, or a luminous object; brilliance or radiance.

s

Translingual

{{Basic Latin character info, previous=r, next=t, image= (wikipedia s)

Letter

  • The nineteenth letter of the .

    • Symbol

    (wikipedia) (mul-symbol)
  • voiceless alveolar fricative
  • Symbol for second , an SI unit of measurement of time.

    • See also

    (Latn-script) * * (esh) * (dze) * {{Letter , page=S , NATO=Sierra , Morse=ยทยทยท , Character=S , Braille=? }} Image:Latin S.png, Capital and lowercase versions of S , in normal and italic type Image:Fraktur letter S.png, Uppercase and lowercase S in Fraktur Symbols for SI units ----

    luminosity

    English

    Noun

    (wikipedia luminosity) (luminosities)
  • (uncountable) the state of being luminous, or a luminous object; brilliance or radiance
  • (physics) the ratio of luminous flux to radiant flux at the same wavelength; the luminosity factor
  • (astronomy) the rate at which a star radiates energy in all directions