Phot
- phot
A unit of illumination equal to 1 lumen per square centimeter; 10,000 phots equal 1 lux.
- lux
A unit of illumination equal to 1 lumen per square meter; 0.0929 foot candle.
Also contains
- L
A cgs unit of illumination equal to the brightness of a perfectly diffusing surface that emits...
- footcandle
A unit of illuminance on a surface that is everywhere 1 foot from a point source of 1...