ft-l

• Unidad obsoleta de luminancia, equivalente a un lumen por pie cuadrado.

A former luminance unit equal to one lumen per square foot.

1. Luminance unitC2formalscientific

   A former unit of luminance equal to one lumen per square foot, used to measure the brightness of a surface.

   Pie-lambert

   • The display's brightness was measured at 50 ft-L.
   • Older projectors often specified their output in foot-lamberts.
   • The calibration standard required a luminance of 30 ft-L.

   Sinónimosfoot-lambert