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- Dictionaryluminosity/ˌluːmɪˈnɒsɪti/
noun
- 1. luminous quality: "acrylic colours retain freshness and luminosity"
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LUMINOSITY definition: 1. the state of producing or reflecting bright light; the state of appearing to shine: 2. the…. Learn more.
1. a. : the quality or state of being luminous. b. : something luminous. 2. a. : the relative quantity of light. b. : relative brightness of something. 3. : the relative quantity of radiation emitted by a celestial source (such as a star) Synonyms. brightness. brilliance. brilliancy. candor. dazzle. effulgence. illumination. lambency.
Luminosity is an absolute measure of radiated electromagnetic energy (light) per unit time, and is synonymous with the radiant power emitted by a light-emitting object. [1] [2] In astronomy, luminosity is the total amount of electromagnetic energy emitted per unit of time by a star, galaxy, or other astronomical objects. [3] [4]
the quality of being intellectually brilliant, enlightened, inspired, etc.: The luminosity of his poetry is unequaled. something luminous. Astronomy. the brightness of a star in comparison with that of the sun: the luminosity of Sirius expressed as 23 indicates an intrinsic brightness 23 times as great as that of the sun.
Luminosity, in astronomy, the amount of light emitted by an object in a unit of time. The luminosity of the Sun is 3.846 × 1026 watts (or 3.846 × 1033 ergs per second). Luminosity is an absolute measure of radiant power; that is, its value is independent of an observer’s distance from an object.
noun. /ˌluːmɪˈnɒsəti/ /ˌluːmɪˈnɑːsəti/ [singular, uncountable] (formal or literary) the fact of shining in the dark; the ability to give out light. The moon was shining enough to give a ghostly luminosity to the buildings that crowded both sides of the narrow street. the luminosity of the stars/sun. Take your English to the next level.
luminosity. (luːmɪnɒsɪti ) 1. uncountable noun. The luminosity of a star or sun is how bright it is. [technical] ...the present-day luminosity of the Sun. 2. uncountable noun. You can talk about the luminosity of someone's skin when it has a healthy glow. Rosy powder gives the skin warmth and luminosity.
Luminosity is the quality of something that gives off light or shines with reflected light. The most noticeable quality of a large, sparkly diamond is its luminosity. You might describe a bright and lively oil painting in terms of its luminosity, or marvel at the luminosity of a brilliant sunset.
Jun 17, 2024 · luminosity. (lumɪnɒsɪti ) 1. uncountable noun. The luminosity of a star or sun is how bright it is. [technical] For a few years its luminosity flared up to about 10,000 times the present-day luminosity of the Sun. 2. uncountable noun.
n. pl. lu·mi·nos·i·ties. 1. The condition or quality of being luminous. 2. Something luminous. 3. The ratio of luminous flux at a specific wavelength to the radiant flux at the same wavelength. Also called luminosity factor.
