#light-trapping

Geometric blackness is the principle of trapping light with shape rather than pigment: angled cavities catch incoming light in repeated reflections so a surface absorbs almost ever…

The surface physics of moving heat by radiation, enabling two cooling moves: rejecting heat by emitting it to the cold sky, and the inverse problem of absorbing solar heat efficien…

Geometric blackness (shape-based light trapping — V-groove / 60° cavities) has a genuine second application on the SUN-FACING FACE of a direct/intermittent solar adsorption ice-mak…

Next: Researched (see thesis) — verdict CONTRADICTED as framed. Do NOT build the grooved-optical version. If the bed face is to be improved optically, use a spectrally-selective coating (α≥0.95, ε≈0.05); if face geometry is pursued at all, treat it as a bed heat-transfer test (developed area), not light trapping.