The main indicator of natural light in rooms is KEO – the coefficient of natural light . KEO is the percentage ratio of illumination on a given horizontal surface indoors (level 0.8 meters from the floor or floor
Lighting technique for assessing natural light
The main indicator of natural light in rooms is KEO – the coefficient of natural light . KEO is the percentage ratio of illumination on a given horizontal surface indoors (level 0.8 meters from the floor or floor