luminosity; light intensity
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Meanings
2 senses · 5 examplesnoun
luminosity; the intrinsic brightness or light-emitting power of a celestial body
technicalA core concept in astronomy used to classify and compare stars. Different from apparent magnitude (亮度), which is how bright a star *appears* from Earth.
Tài太
yáng阳
de的
guāng光
dù度
dà大
yuē约
shì是
dì地
qiú球
jiē接
shōu收
dào到
de的
tài太
yáng阳
guāng光
qiáng强
dù度
de的
duō多
shǎo少
bèi倍
。
The sun's luminosity is about how many times the intensity of sunlight that Earth receives.
Tiān天
wén文
xué学
jiā家
gēn根
jù据
guāng光
dù度
jiāng将
héng恒
xīng星
fēn分
wéi为
qī七
gè个
zhǔ主
yào要
děng等
jí级
。
Astronomers classify stars into seven main categories based on luminosity.
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Zhè这
kē颗
chāo超
jù巨
xīng星
de的
guāng光
dù度
shì是
tài太
yáng阳
de的
shù数
wàn万
bèi倍
。
The luminosity of this supergiant star is tens of thousands of times that of the Sun.
noun
light intensity; degree of illumination
technicalUsed more generally in physics and photography to describe the power or strength of visible light per unit area.
Zhè这
gè个
fáng房
jiān间
de的
guāng光
dù度
tài太
àn暗
，
bù不
shì适
hé合
yuè阅
dú读
。
The light intensity in this room is too low for reading.
Shè摄
yǐng影
shī师
tiáo调
zhěng整
le了
guāng光
quān圈
yǐ以
kòng控
zhì制
zhào照
piàn片
de的
guāng光
dù度
。
The photographer adjusted the aperture to control the light intensity of the photo.