"How does the artificial light actually in connection with the daylight, at my place of work – because close to the window – is very much present?
What does the science to the simultaneous presence of natural and artificial lighting?"
Daylight in the workplace is important and necessarily also by the standard.
It acts relaxing, so reduces the stress level (assuming that the window does not blind). When daylight is sufficient, it is also activating (cortisol).
When the transition from daylight and artificial light there are problems only if the spectral distribution is very different: daylight has a fairly balanced range. Warm white of LEDs E.g. have much red and little blue in the light. Our brain manages to adjust his perception, that also in the warm white light of a white sheet of paper after relatively short time again white looks.
In Twilight situations where daylight white light and warm white light at the same time on the same objects, this is exhausting for the brain because it wants to establish a stability (-> white sheet of paper), but need to make continual alternation. (Walter Witting beautifully describes in "Basics of psychological and physiological mechanisms of visual perception")
Therefore, it is appropriate to adapt the colour of artificial light to daylight when mixing daylight and artificial light.
As soon as daylight more has no significant influence inside (so at the beginning of the twilight), warm-white light should be used.
The course of daylight in the plan-light control consists of a curve which intercepts it and seeks to prevent situations of twilight.
Enjoy as much light as you can! Where it is not enough, then help our lights.
Best regards, Miriam Döhner