Lux

lux (symbol: lx) er SI-enheden for belysningsstyrke og måler lysflux per arealenhed. En lux kan skrives som 1 lumen per kvadratmeter.

I tabellen herunder følger en række eksempler på størrelsesordnen af lux:

Eksempler
Belysningsstyrke [lux] Overflade belyst af
0,0001 Overskyet aftenhimmel ved nymåne[1]
1 Almindeligt stearinlys (1 candela) i cirka 1 meters afstand[1]
3,4 Den mørke grænse for borgerligt tusmørke under klar himmel
100 Meget mørk overskyet dag[1]
1000 Overskyet dag, typisk TV studie-belysning[1]
10.000-25.000 Fuldt dagslys (ikke direkte)[1]
32.000-100.000 Direkte sollys

Referenceliste

  1. ^ a b c d e Schlyter, Paul (1997–2009). "Radiometry and photometry in astronomy". Arkiveret fra originalen d. 7/12 2013.
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