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Terms for subject Lighting (other than cinema) (920 entries)
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
sekundærreferanselampe secondary standard lamp
selektivstråler selective radiator
selvutvekslingskoeffisient self-exchange coefficient (of a surface when its radiance or luminance is the same at all points and for all directions)
seriekatodevarming series cathode heating (of a discharge lamp)
sfærisk irradians spherical irradiance
signallysets rekkevidde luminous range