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  1. Dictionary
    luminosity
    /ˌluːmɪˈnɒsɪti/

    noun

    • 1. luminous quality: "acrylic colours retain freshness and luminosity"

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    More definitions, origin and scrabble points

  2. www.britannica.com › science › lightLight | Definition, Properties, Physics, Characteristics, Types...

    Jun 11, 2024 · light, electromagnetic radiation that can be detected by the human eye. Electromagnetic radiation occurs over an extremely wide range of wavelengths, from gamma rays with wavelengths less than about 1 × 10 −11 metre to radio waves measured in metres.

  3. www.collinsdictionary.com › english-superentry › luminosityLUMINOSITY - Find out everything about this English word |...

    Jun 20, 2024 · All you need to know about "LUMINOSITY" in one place: definitions, pronunciations, synonyms, grammar insights, collocations, examples, and translations.

  4. www.britannica.com › science › galaxyGalaxy - Luminosity, Structure, Types | Britannica

    Jun 23, 2024 · Galaxy - Luminosity, Structure, Types: The external galaxies show an extremely large range in their total luminosities. The intrinsically faintest are the extreme dwarf elliptical galaxies, such as the Ursa Minor dwarf, which has a luminosity of approximately 100,000 Suns.

  5. www.universeguide.com › blogarticle › what-is-luminosityWhat is Luminosity? - Universe Guide

    Luminosity is the total amount of energy that a star or relate object gives off over a period of time. Normally, that period of time is a second. A small blue star can be more luminous than a larger cooler red star.

  6. www.britannica.com › science › star-astronomyStar - Mass, Luminosity, Age | Britannica

    Jun 17, 2024 · Star - Mass, Luminosity, Age: Temperatures of stars can be defined in a number of ways. From the character of the spectrum and the various degrees of ionization and excitation found from its analysis, an ionization or excitation temperature can be determined.

  7. www.vedantu.com › question-answer › define-solar-luminosityDefine solar luminosity. - Vedantu

    3 days ago · Solar luminosity is the total power output of the Sun radiated to the space while solar irradiance is the total power per unit area at a distance of 1AU 1AU. SI unit of solar luminosity is Watt, while that of solar irradiance is Watt per square meter.

  8. www.sws.bom.gov.au › Educational › 2/1/12SWS - The Sun and Solar Activity - The Solar Constant

    3 days ago · The luminosity of the Sun is about 3.86 x 10 26 watts. This is the total power radiated out into space by the Sun. Most of this radiation is in the visible and infrared part of the electromagnetic spectrum, with less than 1% emitted in the radio, UV and X-ray spectral bands. The Sun's energy is radiated uniformly in all directions.