Luminosity definition: The luminosity of a star or sun is how bright it is. Luminosity is a frequent term used in fields such as photography, graphic designing and astronomy.

Learn more. The difference between luminosity and apparent brightness depends on distance. All Free. Luminosity In astronomy , luminosity is the total amount of energy emitted by a star , galaxy , or other astronomical object per unit time. 3. [1] Luminosity functions are used to study the properties of large groups or classes of objects, such as the stars in clusters or the galaxies in the Local Group.. Schechter luminosity function. Luminosity is the total energy that a star produces in one second. En savoir plus. In astronomy, the luminosity function gives the number of stars or galaxies per luminosity interval. It depends on both the radius of the star and on its surface temperature. One can calculate luminosity by finding the product of 1) how much energy each section of the surface of a star is producing (σ T 4, the Stefan-Boltzmann Law) and 2) the entire surface area of the star (4π R 2).

Définition luminosity dans le dictionnaire anglais de définitions de Reverso, synonymes, voir aussi 'luminously',luminous',luminous exitance',luminous intensity', expressions, conjugaison, exemples Something luminous. ... (CCDs) inside digital cameras measure the amount of light coming from stars, and can provide a more precise definition of brightness. luminosity définition, signification, ce qu'est luminosity: 1. the state of producing or reflecting bright light; the state of appearing to shine: 2. the…. The luminosity that matters when it comes to understanding what's powering an object, from stars to quasars, is the intrinsic luminosity. Luminosity. The proper definition of luminosity is the energy radiated per unit time. In some cases, the word is used in other context than the literal meaning of the word. ‘Its luminosity will eventually become about a thousand times higher than today, and its vastly expanded diameter will reach the earth.’ ‘The cloud of debris that will shoot up from the comet on impact is expected to dramatically increase the comet's luminosity, making it visible to smaller telescopes operated by amateurs, and possibly even to the naked eye.’ Synonyms for luminosity at Thesaurus.com with free online thesaurus, antonyms, and definitions. Science & Astronomy; Brightest Stars: Luminosity & Magnitude. The condition or quality of being luminous. ‘Its luminosity will eventually become about a thousand times higher than today, and its vastly expanded diameter will reach the earth.’ ‘The cloud of debris that will shoot up from the comet on impact is expected to dramatically increase the comet's luminosity, making it visible to smaller telescopes operated by amateurs, and possibly even to the naked eye.’ The ratio of luminous flux at a specific wavelength to the... Luminosity - definition of luminosity by The Free Dictionary. The Schechter luminosity function gives the space density of galaxies within a luminosity bin. Another way to look at these quantities is that the luminosity is an intrinsic property of the star, which means that everyone who has some means of measuring the luminosity of a star should find the same value. Find descriptive alternatives for luminosity. Mass-luminosity law definition is - a statement in astronomy: there is a close correlation between the luminosities or absolute magnitudes of stars and their masses so that the more massive stars are in general the more luminous. [1] [not in citation given] The Stefan–Boltzmann equation applied to a blackbody gives the value for luminosity for a blackbody: L= σAT 4. It's a way of understanding the processes inside the object that help make it bright.

It is related to the brightness, which is the luminosity of an object in a given spectral region. The luminosity function reveals that luminous stars are rare and intrinsically faint stars common. luminosity definition: 1. the state of producing or reflecting bright light; the state of appearing to shine: 2. the….

In astronomy, luminosity is the amount of electromagnetic energy a body radiates per unit of time. Learn more.