A study of direct and indirect illumination (1912)
Simons, Alexander McDougall · leaf 112
Fig. 18a Indirect lighting distribution for Room No,4 … . b) Points at which illumination was measuredX A Lamp clusters (2-100 watt lamps) Scale 1=: c;»
Lighting · Theses
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
