luminosity


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lu·mi·nos·i·ty

 (lo͞o′mə-nŏs′ĭ-tē)
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.

luminosity

(ˌluːmɪˈnɒsɪtɪ)
n, pl -ties
1. the condition of being luminous
2. something that is luminous
3. (Astronomy) astronomy a measure of the radiant power emitted by a star
4. (General Physics) physics the attribute of an object or colour enabling the extent to which an object emits light to be observed. Former name: brightness See also colour

lu•mi•nos•i•ty

(ˌlu məˈnɒs ɪ ti)

n., pl. -ties.
1. luminance (def. 2).
2. the quality of being intellectually brilliant, enlightened, inspired, etc.
3. something luminous.
4. the brightness of a star as compared with that of the sun.
5. Also called luminos′ity fac`tor. the brightness of a light source of a certain wavelength as it appears to the eye, measured as the ratio of luminous flux to radiant flux at that wavelength.
[1625–35]

luminosity

A star’s essential brightness.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.luminosity - the quality of being luminousluminosity - the quality of being luminous; emitting or reflecting light; "its luminosity is measured relative to that of our sun"
brightness level, luminance, luminousness, brightness, light
physical property - any property used to characterize matter and energy and their interactions
illuminance, illumination - the luminous flux incident on a unit area
incandescence - light from heat
glow, luminescence - light from nonthermal sources

luminosity

noun
Exceptional brightness and clarity, as of a cut and polished stone:
brilliance, brilliancy, fire, radiance.
Translations
إشْراق، ضِياء
svítivost
glanslysstyrke
fényerõ
birta, skin
svietivosť
ışıldamaparlama

luminosity

[ˌluːmɪˈnɒsɪtɪ] N → luminosidad f

luminosity

n (form) → Helligkeit f; (= emission of light) → Leuchtkraft f; (fig) → Brillanz f

luminous

(ˈluːminəs) adjective
giving out light; faintly shining so as to be visible in the dark. a luminous clock-face.
ˌlumiˈnosity (-ˈno-) noun
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I did not know then that a reddish luminosity, at least, is not uncommon in human eyes.
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There, on those vast plains, they were to describe enormous geometric figures, drawn in characters of reflecting luminosity, among which was the proposition regarding the `square of the hypothenuse,' commonly called the
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Almost was she pretty now, with the unique luminosity in her eyes that comes to a girl with her first suitor and a kitten with its first mouse.
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The camp fires of the blacks dotted the gloom with little points of light, casting their feeble rays in tiny circles of luminosity that brought into glistening relief the naked bodies of those who lay or squatted about them.
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The time was not long past daybreak, and the yellow luminosity upon the horizon behind her back lighted the ridge towards which her face was set--the barrier of the vale wherein she had of late been a stranger--which she would have to climb over to reach her birthplace.
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It seemed hopeless to attempt to follow him here where I could not see my hand before my face, and I was almost on the point of giving up the pursuit and drifting back to the mouth of the river, there to await his return, when a sudden bend showed a faint luminosity ahead.
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When he awoke it was dark, though a faint luminosity still tinged the western heavens.
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A half-light broke through the network of boughs above them, flinging the ghost of a net about their feet; for they were mounting again to the faint luminosity of the naked night.
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From light propagation we see that the standard formula of luminosity distance implies a time varying velocity of light.
On the luminosity distance and the hubble constant
In addition, conventional GaN-based green lasers have difficulties achieving sufficient luminosity as their performance is limited to an output power of several tensof milliwatt at a wavelength of 520 nm or less.
Sumitomo Electric and Sony Intro True Green Semiconductor Laser Diode with 100 mW Output Power at 530 nm
Misgeld (ESO) have defined new statistical tools that relate the number of UCDs to the total luminosity of their host environment.
Ultra-compact dwarf galaxies are massive clusters of bright stars
Until now, tightening the relationship between radius and luminosity has been tricky.
Black holes offer new cosmic ruler: active galactic nuclei may help measure extreme distances

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