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Like the European modular furniture, display cabinets, ceiling tile grids, etc. they were designed for, these are based on multiples of the 300 mm (11.8 in) "metric foot" instead of the 12 in (305 mm) imperial foot, but are all 37 mm (1.5 in) shorter to allow space for the lampholder connections within the 300 mm modular units, and for much ...
Significant peaks of UV light are present for CFL even if not visible. A photograph of various lamps illustrates the effect of color temperature differences. From left to right: • Compact Fluorescent (General Electric, 13 W, 6500 K) • Incandescent (Sylvania, 60 W, Extra Soft White) • Compact Fluorescent (Bright Effects, 15 W, 2644 K
The color rendering index (CRI) of such lamps is around 60. Since the 1990s, higher-quality fluorescent lamps use rare-earths tri-phosphors mixture, based on europium and terbium ions, which have emission bands more evenly distributed over the spectrum of visible light, but with peaks in the red, green and blue. Triphosphor tubes give a more ...
Ceiling Dome – the light source(s) are hidden behind a translucent dome typically made of glass, with some combination of frosting and surface texturing to diffuse the light. These can be flush-mount fixtures mounted into the ceiling, or semi-flush fixtures separated by a small distance (usually about 3–12").
A 200-litre drum (known as a 55-gallon drum in the United States and a 44-gallon drum in the United Kingdom and the rest of the world) is a cylindrical container with a nominal capacity of 200 litres (55 US or 44 imp gal). The exact capacity varies by manufacturer, purpose, or other factors.
The manhunt for the meticulous assassin who gunned down UnitedHealthcare CEO Brian Thompson in Manhattan widened Friday — as police believe the suspect hopped on a bus out of town shortly after ...
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