TIANLICHUJU — PERSONAL VERIFICATION WORKSHEET
A Scandinavian living room for weak afternoon light
https://tianlichuju.com/journal/a-scandinavian-living-room-for-weak-afternoon-light/

PROPOSED CHECKS — NO MEASURED RESULTS SUPPLIED
Date: __________________  Units: __________________
Room / product reference: __________________

1. Occupied light diary
Where: At each main seat during the late-afternoon and evening hours the household actually uses the room.
Record: Note time, weather, active lamps, readable tasks, and shadows; use the same printed page rather than judging automatic camera brightness.
Your observation: ______________________________________________
Interpretation: The diary locates task-specific difficulty; it is not a calibrated illuminance survey or a diagnosis of a person's vision.
Alternative: Move an appropriate lamp to the affected activity before repainting every surface or adding a brighter central fitting.

2. Window and curtain loss
Where: At the window with curtains fully open, then from the main chair facing that opening.
Record: Measure visible glass and fabric stack widths in centimeters; compare a safely held fabric sample against the current uncovered view.
Your observation: ______________________________________________
Interpretation: This records obstruction and perceived change under one condition, not a quantified daylight factor or an all-season prediction.
Alternative: Alter stack space or separate practical privacy from the decorative layer when cloth removes too much useful daylight.

3. Reflected source
Where: From every normal seated eye position toward screens, glazed art, and the opposite window.
Record: Draw which lamp appears as a bright reflection, its position, and whether moving the shade changes the occupied view.
Your observation: ______________________________________________
Interpretation: Seat-specific observations can identify glare candidates, but they do not establish a lighting product's universal comfort or compliance.
Alternative: Change source position, shielding, or surrounding light rather than assuming a higher output will improve the task.

PRACTICAL TRIAL
1. Try existing lamps at the proposed seats with safely managed leads.
2. Check reading and circulation after daylight fades, not only at noon.
3. Operate each switch from its normal approach without moving heavy furniture.

COMPARE THE SAME SCOPE
- Useful beam and shade at each activity
- Accessible switching and safe cable route
- Replaceable sources, controls, and curtain coverage
Cost drivers: New outlets versus portable lamp positions; Compatible dimming or connected controls; Track changes to recover window area
Choose another route when: A paint-only scheme is insufficient when the room is occupied after useful daylight ends or when the main problem is an exposed source beside a task.

EVIDENCE BOUNDARY
No light levels or visual outcomes are reported as measured. These proposed seated comparisons guide placement and cannot replace a technical lighting assessment where one is needed.

PHOTO REFERENCE
A sofa, armchair and small tables form a sitting area, with a curtain and table lamps behind them.
https://commons.wikimedia.org/wiki/File:Hotel-suite-living-room.jpg

DECISION CONDITIONS
choose: Choose a lamp arrangement after reading and moving through the room at the hours it normally becomes dim, using a separate useful source at each relevant seat.
alternative: Adjust curtain stack space, source shielding, or a room-edge lamp before repainting the entire room or replacing a central fitting that already serves another task.
stop: Stop adding brightness when the obstacle is a reflected source, inconvenient switch, or shadowed page that the proposed fitting does not actually address.

PUBLISHED REFERENCES
CCOHS: Lighting Ergonomics Checklist
https://www.ccohs.ca/oshanswers/ergonomics/lighting/lighting_checklist.html
CCOHS's checklist treats task illumination, reflections, sight-line glare, shadows, and local lighting as separate checks. It supports recording what fails at the occupied seat rather than treating a generally bright room or pale surface as evidence that reading light is adequate.
Scope: The checklist addresses workplace lighting; its diagnostic questions inform a home trial without transferring occupational targets or health outcomes.
Photographer: Derek Jensen ( Tysto )
Licence: Public domain https://commons.wikimedia.org/wiki/Commons:Reusing_content_outside_Wikimedia

Notes: ________________________________________________________