Daylight can be measured in terms of illuminance and luminance, two words that sound similar but should not be confused. Illuminance is the measure of the amount of light received on the surface ...

Useful Daylight Illuminance (UDI) is a lighting metric that measures different lux levels (luminous flux per unit area) in a space. Specifically, it calculates the percentage of the floor area in ...

These quiet alarms that add gentle daylight illumination to a room to wake their subjects, instead of sounds, have year-round health benefits, but may be particularly helpful with the time change.

The analysis conducted by the academics showed that, compared to the Low-E system, the SPV window with the CtrlFlux control strategy was able to achieve reductions in excessive daylight ...