noun (plural luminosities)[mass noun]
- 1Luminous quality: acrylic colours retain freshness and luminosityMore example sentences
- So placed, the light sculpture's flickering luminosity seems to both recall an earlier contemplation and act as new illumination to a newer generation.
- With the trappings of representation obliterated, the paintings offer a lean and stripped down physicality defined by specific proportion, luminosity and surface quality.
- It hurtled through a void, an immense cathedral of black pitch, specked with faint pinpoints of light whose pale luminosity underscored the darkness that shrouded them.
- 1.1 Astronomy The intrinsic brightness of a celestial object (as distinct from its apparent brightness diminished by distance): Altair has ten times the luminosity of the sun [count noun]: the luminosities of galaxiesMore example sentences
- Stars, however, come in a staggering range of luminosities, spanning ten orders of magnitude ten powers of ten.
- Stars of lower mass and luminosity, however, glow dimly with red light for billions of years: the redder the star is, the older it is.
- Its luminosity will eventually become about a thousand times higher than today, and its vastly expanded diameter will reach the earth.
- 1.2 Physics The rate of emission of radiation, visible or otherwise.More example sentences
- The peak photon energy occurs at 10 keV and the total X-ray luminosity is 1045 ergs/sec.
- Because of small body movements or maybe sudden changes in luminosity, some of the recorded emission spectra showed artifacts.
- The first 15 photophase hours were at a 1000 lux luminosity and the last hour (simulating dusk) was at 25 lux luminosity.
More definitions of luminosityDefinition of luminosity in:
- The US English dictionary