Termlist

This list contains 1525 entries.
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To search for a term that also appears as part of another term (i.e. "light" but not "lighting", "luminance" but not "illuminance") use a space character after resp. before the search term.
Number Term Images
1034

raised pavement marker (US)

1035

rated luminous flux (of a type of lamp)

1036

rated power (of a type of lamp)

1037

rating (of a lamp)

1038

readability

1039

rear fog light

1040

rear position light

1041

rear registration-plate light

1042

recessed luminaire

1043

reciprocal colour temperature

1044

reciprocating lights

1045

reciprocity law

1046

reduced luminance coefficient (for a point on a surface) [r]

1047

reference ballast

1048

reference colour stimuli

1049

reference direction (of a floodlight)

1050

reference illuminant

1051

reference lamp (for testing ballasts)

1052

reference lighting

1053

reference location

1054

reference medium

1055

reference plane

1056

reference point

1057

reference surface

1058

reflectance (for incident radiation of given spectral composition, polarization and geometrical distribution) [ρ]

1059

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, polarisation and geometric distribution) [R]

1060

reflectance factor (optical) density [DR]

1061

reflectance (optical) density [Dρ]

1062

reflected (global) solar radiation

1063

reflected luminance factor (at a surface of a non-self-radiating medium in a given direction, under specified conditions of illumination) [βv,R]

1064

reflected radiance factor (at a surface of a non-self-radiating medium in a given direction, under specified conditions of illumination) [βR]

1065

reflection

1066

reflective sign

1067

reflectivity (of a material) [ρ]

1068

reflectometer

1069

reflector

1070

reflector lamp

1071

reflector spotlight

1072

reflectorized bulb

1073

refraction

1074

refractive index (of a medium, for a monochromatic radiation of wavelength, λ, in vacuum) [n(λ)]

1075

refractor

1076

regular reflectance [ρr]

1077

regular reflection

1078

regular transmission

1079

regular transmittance [τr]

1080

related colour

1081

relative colour stimulus function [φ(λ)]

1082

relative optical air mass [m]

1082

relative optical air mass [m]

1082

relative optical air mass [m]

1083

relative responsivity (of a detector) [sr]

1084

relative spectral distribution (of a radiant, luminous or photon quantity X(λ)) [S(λ)]

1085

relative spectral responsivity (of a detector) [sr(λ)]

1086

relative sunshine duration

1087

relevant boundary (of a residential property)

1088

rendering intent

1089

residential area

1090

residential property

1091

residential street

1092

resonance line

1093

response time (of a detector)

1094

responsivity (of a detector) [s]

1094

responsivity (of a detector) [s]

1095

resultant colorimetric shift

1096

resultant colour shift

1097

retina

1098

retinal burn

1099

retinal hazard spectral region

1100

retinal thermal hazard spectral weighting function [r(λ)]

1101

retinal thermal injury

1102

retinal thermal radiance [Lr]

1103

retroreflectance

1104

retroreflection

1105

retroreflective element

1106

retroreflective material

1107

retroreflector

1108

reversing light

1109

rhythmic light

1110

ring road

1111

rise and fall pendant

1112

rise time (of a detector)

1113

road

1114

road marking

1115

road stud

1116

road surface

1117

rods

1118

rolling noise

1119

rooflight

1120

room cavity ratio [K] (US)

1121

room index [K]

1122

room surface maintenance factor [fRSM]

1123

rotation (of a luminaire) [ψ]

1124

rotationally symmetrical luminous intensity distribution (of a source)

1125

RSMF (abbreviation)

1126

runway centre-line light

1127

runway edge light

1128

runway end light

1129

runway light

1130

runway threshold light