Light & measurement
A source-checked introduction to photometry.
Study area 01 / Foundations + practical guide
Light & color
Seeing, illumination, reflection and the choices that shape a room.
Featured reading
Light is more than a brightness number.
A study area with many ways in.
Open the reading >Foundations & subtopics
A path into the subject.
Task & display lighting
A practical guide, illustrative interaction and manufacturer-document example.
Color in context
An original observation, art-teaching context and optional exact-edition reading reference.
Reflection & prisms
Research outline: distinguish optics, visual experience and symbolism. No health-effect claims reviewed.
The optional product layer
Research first.
Objects second.
The Light Edit connects these questions to ordinary task and display lighting.
How we label evidence and relationships >Review history
— Category landing established; available readings and future research outlines are labeled separately.
A dated starting point, not a continuously monitored or systematic review. See the research log.
New practical field guide
Start with the room.
Observe one real task, change one thing, then decide whether you need a product.
Try the room-light checklist >