| Terms for subject Lighting (other than cinema) (1011 entries) |
| tåkelyskaster | front fog light | |
| tennanordning | starting device | |
| tennerløst lysstoffrør | starterless fluorescent lamp | |
| tennspenning | starting voltage (of a discharge lamp) | |
| termisk fremstilling av lys | incandescence | |
| termisk strålingsdetektor | thermal detector of radiation | |
| termisk utstråler | thermal radiator | |
| termoluminescens | thermally activated luminescence | |
| tillatt armatur i gruve | permissible luminaire | |
| tilsynelatende størrelse | apparent magnitude (of an astronomical object) | |
| topplanterne | mast-head light | |
| total lysfluks | total flux (of a source) | |
| total skymengde | total cloud amount | |
| trafikkskilt | traffic sign | |
| translucent medium | translucent medium | |
| transmisjonsfaktor | transmittance (for incident radiation of given spectral composition, polarization and geometrical distribution) | |
| transmittans for solstråling | total (energy) transmittance (of glazing material) | |
| tristimulusverdier | tristimulus values (of a colour stimulus) | |
| ubehagsblending | discomfort glare | |
| Ulbrichts kule | Ulbricht sphere |