luminosities

Measures of radiance

Luminosities is the plural of luminosity—the quality or state of emitting or reflecting light.

In astronomy, luminosity measures the total energy a celestial body radiates per unit of time: comparing the luminosities of different stars.

More broadly, it can describe brightness or radiance: the luminosities of the chandeliers filled the ballroom.

radiance

glow

Steady, soft light

sparkle · glisten · sheen · glint · brilliance · effulgence · iridescence · phosphorescence · refulgence · resplendence

measurement

photometry

Measuring light intensity

nit · spectrophotometry · calibration · photodiode · flux · irradiance · sensor · units · quantification

stellar

magnitude

Size or scale

galaxy · photosphere · blackbody · spectroscopy

Opposites
light output/brightness

luminositiesdarknesses

Conditions lacking light

faintnesses · obscurities · dullnesses · opacities · blacknesses

visibility/perceptibility

luminositiesinvisibilities

States of being unseen

obscurities · concealments

BRILLIANCE/RADIANCE (figurative)

luminositiesdullnesses

States of being uninteresting

obscurities · mediocrities · unremarkableness · ordinariness · colorlessness

Family

illuminate, luminous, illumination, illuminating, luminosity, luminescent, luminescence, illumine, luminance

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