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Circadian lighting, explained.
Plain-English guides to how light shapes human performance, and why it belongs in the business case, not just the design intent.
Guide
What is circadian lighting?
Circadian lighting is lighting designed around the body's 24-hour clock: brighter and cooler by day, warmer and dimmer at night. How it works, and the ROI.
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What is biophilic lighting?
Biophilic lighting brings the qualities of natural light indoors: daylight, dynamic change, and warmth. What it is, and why it matters.
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Redefining ROI
Incorporating human performance into lighting valuation models: the methodology, as presented in Leiden, March 2026. Free with registration.
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