What is another word for quality of illumination?
Pronunciation: [kwˈɒlɪti ɒv ɪlˌuːmɪnˈe͡ɪʃən] (IPA) 
The quality of illumination refers to the way in which light is distributed and perceived. Synonyms for this term include brightness, luminosity, radiance, brilliance, and clarity. The brightness of illumination refers to the amount of light transmitted or reflected by a surface. Luminosity pertains to the intensity of light emitted by a source. Radiance describes the glow or aura surrounding a light source. Brilliance refers to the sharpness and clarity of light. Finally, clarity refers to the sharpness of the image produced by the light source. These synonyms emphasize different aspects of the quality of illumination, but all reflect the importance of light in our everyday lives.
