—The Architecture Puzzler
Created by Dave Guadagni
Solution to Last Week's Puzzler
Architecture Puzzler #574
What is the difference between illuminance and luminance?
Illuminance is a measure of the amount of light incident at a point (expressed in footcandles or lux (metric). Luminance, expressed in footlamberts, is a measure of how much light is reflected from or passed through a surface. It is more representative of what a person sees and takes into account reflective characteristics of room surfaces.
Dave Guadagni, AIA, is an architect with Robertson/Sherwood/Architects
Quizzical Pursuit is Copyright 2013, Dave Guadagni.
Shedding light on books and readers at the Seattle Public Library, designed by Rem Koolhaas.
Photo: David Owen/ Artifice Images