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Terms for subject Lighting (other than cinema) (920 entries)
reflektans reflectance (for incident radiation of given spectral composition, polarization and geometrical distribution)
reflektansfaktor reflectance factor (at a surface element, for the part of the reflected radiation contained in a given cone with apex at the surface element, and for incident radiation of given spectral composition, polarization and geometrical distribution)
reflektorlampe reflector lamp
regulær refleksjon specular reflection
regulær transmisjon direct transmission
regulær transmittans regular transmittance
relatert farge related (perceived) colour
relativ fargestimulusfunksjon relative colour stimulus function
relativ opphengslengd suspension factor (of an installation in an interior)
relativ responsivitet relative responsivity
relativ spektralfordeling relative spectral distribution (of a radiant, luminous or photon quantity)
rellativ del av nedoverretta lysfluks cumulative downward flux proportion (of a source, for a solid angle)
reservebelysning stand-by lighting
resonanslinje resonance line
responstid response time (of a detector)
retroreflektor retroreflector
rettet belysning directional lighting
romindeks installation index
romvirkningsgrad utilance (of an installation, for a reference surface)
ryggelys reversing light