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LED tubes. LED tube is a type of LED lamp used in fluorescent tube luminaires with G5 and G13 bases to replace traditional fluorescent tubes. [1] As compared to fluorescent tubes, the most important advantages of LED tubes are energy efficiency and long service life. LED tubes are sometimes also referred to as ‘LED fluorescent tubes’.
In the 1970s, Thorn Lighting introduced an energy-saving 8 ft retrofit tube in Europe. Designed to run on the existing 125 W (240 V) series ballast but with a different gas fill and operating voltage, the tube operated at only 100 W. Increased efficiency meant that the tube produced only 9% lumen reduction for a 20% power reduction. [7]
Beko has been the official sponsor of the Turkish, Italian and Lithuanian premier basketball leagues, as well as the 2014 FIBA Basketball World Cup in Spain. [14] Beko is a partner of the Spanish football club FC Barcelona [15] since 2014 and Turkish football club Beşiktaş JK [16] (having previously been their shirt sponsor from 1988 to 2004 [17]) and Turkmen football club FC HTTU. [18]
Light transmission efficiency is greatest if the tube is short and straight. In longer, angled, or flexible tubes, part of the light intensity is lost. To minimize losses, a high reflectivity of the tube lining is crucial; manufacturers claim reflectivities of their materials, in the visible range, of up to almost 99.5 percent. [10] [11]
The suffix after the G indicates the pin spread; the G dates to the use of Glass for the original bulbs. GU usually also indicates that the lamp provides a mechanism for physical support by the luminaire: in some cases, each pin has a short section of larger diameter at the end (sometimes described as a "peg" rather than a "pin" [2]); the socket allows the bulb to lock into place by twisting ...
A 3D rendering of a skeleton showcasing bisexual lighting. Bisexual lighting is the simultaneous use of pink, purple, and blue lighting and is used to represent bisexual characters. It has been used in studio lighting for film and television, and has been observed in the cinematography of various films.
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