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Daylight is one of the most desirable qualities for any building, especially a green building. From my Base Zero lighting design perspective (follow the link for my previous blog), daylight is fundamental. An aperture in a roof or wall introduces daytime illuminance into an otherwise dark enclosure. But there is an art and a science [...]
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This month, our lighting design team received the jumbo copy of The Lighting Handbook, 10th Edition by the Illuminating Engineering Society. It is almost four inches thick and weighs about 10 pounds. It is the accumulated knowledge of the organization dubs itself “The Lighting Authority.” It is impressively massive and cumbersome, ironically not a “handbook” [...]
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Alternating current may be safer electricity, but direct current is more efficient electricity. The architectural lighting industry provides products that operate on alternating current (AC), 120 volts in North America and 220 volts in most of the rest of the world. But solid state LED lighting products, along with most electronic devices, use transformers to [...]
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Lighting has some basic qualities: direction, color, diffusion, and intensity. The first three are typically static in buildings, depending on the location of the light, the source, and luminaire characteristics. But intensity should be variable. If a sound system needs volume control and an HVAC system needs a thermostat, then a lighting system needs dimming [...]
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