#Daylight + lighting

02.daylight+lighting
4(23)
Psychology
It may seem counter-intuitive at first to believe that we actually
receive nourishment from the sun. We are conditioned to
believe that nourishment comes from food, and nothing else.
However, the interplay of light and radiation upon our skin is
one of the most important factors in maintaining good health.
Human beings are even more dependent than most other
animals on the sun as a source of nutrition. Our relatively
hairless, bare skin is a result of adaptations to life in the sun,
and to an increased need for the unique qualities in light and
radiation to optimally experience the world and maintain
physical health.
Apart from providing a view and contact with the outside world,
windows and roof lights have other psychological and
physiological advantages. Occupant preference for natural
rather than electric light lies also in the quality of light, its
colour rendering ability, as well as its changeability and
variability.
Daylight falls off rapidly with distance from the window wall.
Vertical planes and luminance/brightness contrasts in the
interior space are important, as large contrasts have definite
negative effects on the physical wellbeing of occupants.