On February 19th, an interesting article was published in the Dutch newspaper NRC with Marijke Gordijn, Board member of the Good Light Group. It describes the importance of good light in office environments. Lighting is often treated as of low importance in offices, but good light can have an enormous influence on sleep quality, alertness during daytime and mood. It is a big contributor to well-being of people. To avoid biological darkness indoors during the day, the lighting levels need to be at least five times higher than the current practice in indoor lighting. This is estimated to be 1000 lux vertical at the level of the eye. For a link to this Dutch article see: https://www.nrc.nl/nieuws/2020/02/19/goed-licht-daar-word-je-beter-van-a3991039
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