| 释义 |
lu·mi·nos·i·ty
\ˌ ̷ ̷ ̷ ̷ˈnäsəd.ē, -ətē, -i\ noun
(-es)
Etymology: from luminous, after such pairs as English curious : curiosity
1.
a. : the quality or state of being luminous
< the rare few … who give to accurate reporting the luminosity of poetry — D.C.Peattie >
b. : something luminous
< mind is a constant luminosity — John Dewey >
2.
a. : the relative quantity of light
b. : brightness 2a
3. : the quantity of radiation emitted by a star or other celestial source usually expressed in terms of the sun's intensity or in centimeter-gram-second units
4. : the luminous efficiency of radiant energy : the ratio of light to heat in radiant energy — used in psychophysics |