1/ Why considering direct daylighting during the beginning of the research over time ?

Let's use daylight to lit interior spaces!

ENERGY SAVING:

>Artificial lighting = 25 percent of the electric energy

>"efficient daylight = energy saving (by 30-60% )"

(Source)"SKY LIGHTING AND RETAIL SALES-An Investigation into the Relation Between Daylighting and Human Performance", conducted by Pacific Gas and Electric demonstrates.

PRODUCTIVITY:

>Students exposed to full spectrum light will : learn faster, test higher.

(source)"A Study into the Effects of Types of Light on Children - A Case of Daylight" by Robbery Warren E. Hathaway, PhD

>student's performances at tests are significantly bettered (10-20%), and the sales are increased with an average of 40% when working in spaces exposed to daylight.

(Source) "SKY LIGHTING AND RETAIL SALES-An Investigation into the Relation Between Daylighting and Human Performance"

HEALTH:

DL benefical effects on: stress, anxiety, depression, migraines, sleep disorders, immune system function, cholesterol levels, increases calcium utilization, visual acuity, Cardiac outputs .

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