In indoor commercial lighting, what does downlighting primarily do?

• A. Directs illumination downward from the ceiling
• B. Directs illumination upward to the ceiling
• C. Provides ambient glow only
• D. Focuses light on walls

Answer: (A)

Downlighting involves fixtures that shoot light downward from the ceiling to illuminate the area below. This concentrates illumination where tasks are performed—desks, counters, and floors—improving visibility and reducing shadows at the work surface. It also helps control glare by avoiding bright overhead light shining directly into the eyes. Upward lighting creates ambient glow on the ceiling, not task-focused illumination. Ambient glow describes general illumination, not targeted downward light. Lighting aimed at walls serves wall washing or accent purposes, which is a different effect from downlighting.