As that process continues, it may become increasingly difficult to justify the expense of incandescent lamps in all but the most upscale installations. (nreionline.com)
Following a test installation, Squaglia converted 300 incandescent lamps in the hanging pendant fixtures above the booths in the North Arcade. (nreionline.com)
«The photometers that lamp manufacturers use for calibrating their devices have been produced and calibrated for incandescent lamps, which results in errors when measuring the efficacy of LEDs. (sciencedaily.com)