File:The_Sun_in_white_light.jpg · Wikimedia Commons · See Wikimedia Commons
luminosité
Sign in to saveAlso known as radiant power
thumb|The Sun has an intrinsic luminosity of . In astronomy, this amount is equal to one [[solar luminosity, represented by the symbol L⊙. A star with four times the radiative power of the Sun has a luminosity of .]] Luminosity is an absolute measure of radiated electromagnetic energy per unit time, and is synonymous with the radiant power emitted by a light-emitting object. In astronomy, luminosity is the total amount of electromagnetic energy emitted per unit of time by a star, galaxy, or other astronomical objects.
Luminosity is the total amount of electromagnetic energy that a star or other astronomical object emits per unit of time—essentially, how much light and energy it radiates into space. Astronomers use this measurement to compare the intrinsic brightness of different objects, such as the Sun, which serves as a reference point called one solar luminosity.
AI-generated from the Wikipedia summary — may contain errors.
Wikidata facts
- Subclass of
- radiant flux
- Image
- Inverse square law.svg
- Said to be same as
- lightness
Show 3 more facts
- different from
- luminosity
- recommended unit of measurement
- watt
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
via Wikidata · CC0
Article · Français
En astronomie, la luminosité est la quantité totale d'énergie émise par unité de temps (le flux énergétique), par une étoile, une galaxie, ou n'importe quel autre objet céleste. Elle s'exprime en pratique en luminosité solaire ( = 3,827 5 × 1026 W). Le flux lumineux, qui mesure plus particulièrement l'émission en lumière visible, peut également s'exprimer sur une échelle logarithmique par la magnitude absolue.
Abstract from DBpedia / Wikipedia · CC BY-SA
Gallery (6)
Available in 66 languages
- Español
- Français
- Deutsch
- 中文
- 日本語
- Русский
- Português
- Italiano
- العربية
- हिन्दी
- Afrikaans
- Aragonese
- Armenian
- Asturian
- Bahasa Indonesia
- Basque
- Belarusian
- Bosnian
Show 47 more
- Bulgarian
- Catalan
- Chuvash
- Croatian
- Czech
- Danish
- Esperanto
- Filipino
- Finnish
- Galician
- Haitian Creole
- Hebrew
- Hungarian
- Icelandic
- Ido
- Irish
- Kabyle
- Kazakh
- Latvian
- Lithuanian
- Low German
- Luxembourgish
- Macedonian
- Malay
- Marathi
- Nederlands
- Norwegian
- Norwegian Nynorsk
- Polski
- Romanian
- Serbian
- Serbian (Latin)
- simple
- Slovak
- Slovenian
- Sundanese
- Svenska
- Tatar
- Tiếng Việt
- Türkçe
- Ukrainian
- Uzbek
- Wu Chinese
- zh_yue
- فارسی
- ไทย
- 한국어
via Wikidata sitelinks · CC0