foot lambert
/fʊt ˈlæmbərt/
noun
- A unit of measurement for luminance (brightness) equal to the luminance of a surface that emits or reflects one lumen per square foot.
- The screen's brightness is measured in foot-lamberts.
- The display needs to reach at least 100 foot-lamberts for good visibility outdoors.
- A typical movie theater projector produces about 14 foot-lamberts.