Principlev1PR-1432
Match your lighting to circadian phase—bright, blue-rich…
Match your lighting to circadian phase—bright, blue-rich light during analytical work hours, warm, dim light in evening to protect sleep quality.
Why This Is a Principle
This principle derives directly from ultradian and circadian rhythm constraints (Ultradian and Circadian Cognitive Rhythms). It prescribes temporal variation in lighting strategy based on biological cycles, translating the axiom into actionable design.