Definitions for radiance
ˈreɪ di ənsra·di·ance
This dictionary definitions page includes all the possible meanings, example usage and translations of the word radiance.
radiance, glow, glowingnoun
the amount of electromagnetic radiation leaving or arriving at a point on a surface
radiance, radiancy, shine, effulgence, refulgence, refulgencynoun
the quality of being bright and sending out rays of light
an attractive combination of good health and happiness
"the radiance of her countenance"
the quality of being radiant, shining, bright or splendid
Girt with omnipotence, with radiance crowned. uE000197485uE001 Milton.
the flux of radiation emitted per unit solid angle in a given direction by a unit area of a source
Etymology: From radiare + -ance
Samuel Johnson's Dictionary
Sparkling lustre; glitter.
Etymology: radiare, Lat.
By the sacred radiance of the sun,
By all the operations of the orbs,
Here I disclaim all my paternal care. William Shakespeare, K. Lear.
Whether there be not too high an apprehension above its natural radiancy, is not without just doubt; however it be granted a very splendid gum, and whose sparkles may somewhat resemble the glances of fire. Thomas Browne, Vulgar Errours.
Girt with omnipotence, with radiance crown’d
Of majesty divine. John Milton.
A glory surpassing the sun in its greatest radiancy, which, though we cannot describe, will bear some resemblance. Thomas Burnet, Theory of the Earth.
The rapid radiance instantaneous strikes
Th’ illumin’d mountain. James Thomson, Spring.
In radiometry, radiance is the radiant flux emitted, reflected, transmitted or received by a given surface, per unit solid angle per unit projected area. Radiance is used to characterize diffuse emission and reflection of electromagnetic radiation, and to quantify emission of neutrinos and other particles. The SI unit of radiance is the watt per steradian per square metre (W·sr−1·m−2). It is a directional quantity: the radiance of a surface depends on the direction from which it is being observed. The related quantity spectral radiance is the radiance of a surface per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength. Historically, radiance was called "intensity" and spectral radiance was called "specific intensity". Many fields still use this nomenclature. It is especially dominant in heat transfer, astrophysics and astronomy. "Intensity" has many other meanings in physics, with the most common being power per unit area.
Radiance is a measure of the intensity or brightness of light traveling from or hitting a particular surface or object in a specific direction. It measures the amount of light in watts that falls on an area in square meters from a particular direction in space, per unit of solid angle in steradians. Radiance helps to determine and quantify how much of the observer's field of view is produced by the source light.
alt. of Radiancy
Radiance and spectral radiance are measures of the quantity of radiation that passes through or is emitted from a surface and falls within a given solid angle in a specified direction. They are used in radiometry to characterize diffuse emission and reflection of electromagnetic radiation. In astrophysics, radiance is also used to quantify emission of neutrinos and other particles. The SI unit of radiance is watts per steradian per square metre, while that of spectral radiance is W·sr−1·m−2·Hz−1 or W·sr−1·m−3 depending on if the spectrum is a function of frequency or of wavelength.
The numerical value of radiance in Chaldean Numerology is: 4
The numerical value of radiance in Pythagorean Numerology is: 1
Beauty is the radiance of truth, and the frangrance of goodness.
That little girl radically and beautifully changed her life, her name is Radiance — we call her Rai Rai. We named the foundation after her.
If the radiance of a thousand sunsWere to burst at once into the skyThat would be like the splendor of the Mighty one --I am become Death,The shatterer of Worlds.
We will experience the superpower of light, clearly illuminating the common purpose we are all fighting for, in that light, in that luster, in that radiance, let us resolve in our minds that we are not alone, that no one is alone.
God does not die on the day when we cease to believe in a personal deity, but we die on the day when our lives cease to be illumined by the steady radiance, renewed daily, of a wonder, the source of which is beyond all reason.
Popularity rank by frequency of use
Translations for radiance
From our Multilingual Translation Dictionary
- تابش آفتابPersian
- säteilytiheys, radianssi, säteilevyys, säteilyFinnish
- radianza, splendoreItalian
- blask, radiancjaPolish
- lucire, strălucire, emitanță, iradiere, radianțăRomanian
- сияние, блеск, излучениеRussian
Get even more translations for radiance »
Find a translation for the radiance definition in other languages:
Select another language:
- - Select -
- 简体中文 (Chinese - Simplified)
- 繁體中文 (Chinese - Traditional)
- Español (Spanish)
- Esperanto (Esperanto)
- 日本語 (Japanese)
- Português (Portuguese)
- Deutsch (German)
- العربية (Arabic)
- Français (French)
- Русский (Russian)
- ಕನ್ನಡ (Kannada)
- 한국어 (Korean)
- עברית (Hebrew)
- Gaeilge (Irish)
- Українська (Ukrainian)
- اردو (Urdu)
- Magyar (Hungarian)
- मानक हिन्दी (Hindi)
- Indonesia (Indonesian)
- Italiano (Italian)
- தமிழ் (Tamil)
- Türkçe (Turkish)
- తెలుగు (Telugu)
- ภาษาไทย (Thai)
- Tiếng Việt (Vietnamese)
- Čeština (Czech)
- Polski (Polish)
- Bahasa Indonesia (Indonesian)
- Românește (Romanian)
- Nederlands (Dutch)
- Ελληνικά (Greek)
- Latinum (Latin)
- Svenska (Swedish)
- Dansk (Danish)
- Suomi (Finnish)
- فارسی (Persian)
- ייִדיש (Yiddish)
- հայերեն (Armenian)
- Norsk (Norwegian)
- English (English)
Word of the Day
Would you like us to send you a FREE new word definition delivered to your inbox daily?
Use the citation below to add this definition to your bibliography:
"radiance." Definitions.net. STANDS4 LLC, 2023. Web. 1 Oct. 2023. <https://www.definitions.net/definition/radiance>.