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luminosity noun

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