Usage examples (6)

• As little as two footcandles of light can disrupt the delicate process by which delta-9-THC accumulates in the buds.
• It was gratifying to know that if their remaining tube faded to a strength of a few footcandles, Sowelmanu would still be able to see clearly enough by it to guide them.
• Milena Simeonova's exhortation to look beyond the simple watts per square foot and footcandles and focus on the human response to lighting.
• Of course, skylights and windows have been around forever; the reason the fluorescent fixture took over is that the engineers wanted control - to get precisely the right number...