| 单词 | luminosity |
| 释义 | luminosity (once / 14962 pages) n Luminosity is the quality of something that gives off light or shines with reflected light. The most noticeable quality of a large, sparkly diamond is its luminosity. You might describe a bright and lively oil painting in terms of its luminosity, or marvel at the luminosity of a brilliant sunset. Astronomers use the word luminosity to talk about a specific property of physics, the energy given of by an astronomical object in a certain amount of time. There's a direct correlation between this amount of energy and the object's brightness. The Latin root is lumen, meaning "light." WORD FAMILYluminosity: luminosities+/luminous: luminosity, luminously, luminousness, self-luminous USAGE EXAMPLESHere we present updated figures and model fits with the correct bolometric luminosity. Nature(Oct 04, 2016) Five years later, she determined the relationship between luminosity and period of fluctuation for a class of pulsing variable stars called Cepheids. Nature(Nov 22, 2016) And one of the marvels of Ms. Foster’s interpretation is the luminosity with which she endows her character’s dimness. New York Times(Nov 20, 2016) n the quality of being luminous; emitting or reflecting light its luminosity is measured relative to that of our sun Syn|Hypo|Hyper brightness, brightness level, light, luminance, luminousness illuminance, illumination the luminous flux incident on a unit area incandescencelight from heat glow, luminescencelight from nonthermal sources physical property any property used to characterize matter and energy and their interactions |
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