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The most common type of floodlight was the metal-halide lamp, which emits a bright white light (typically 75–100 lumens/Watt). Sodium-vapor lamps are also commonly used for sporting events, as they have a very high lumen to watt ratio (typically 80–140 lumens/Watt), making them a cost-effective choice when certain lux levels must be provided. [4]
A 175-watt mercury-vapor light approximately 15 seconds after starting.A closeup of a 175-W mercury-vapor lamp.The small diagonal cylinder at the bottom of the arc tube is a resistor which supplies current to the starter electrode.
The history of electric light is well documented, [11] and with the developments in lighting technology the profession of lighting developed alongside it. The development of high-efficiency, low-cost fluorescent lamps led to a reliance on electric light and a uniform blanket approach to lighting, but the energy crisis of the 1970s required more design consideration and reinvigorated the use of ...
Announced in 2011 China has banned imports and sales of certain incandescent light bulbs since October 2012 to encourage the use of alternative lighting sources such as light-emitting diodes (LEDs), with a 5-year plan of phasing-out incandescent light bulbs over 100 watts starting 1 October 2012, and gradually extend the ban to those over 15 ...
The logo of BLIA Philippines. The Buddha's Light International Association – Philippines (Chinese: 國際佛光會菲律賓協會) is the Philippine chapter of Buddha's Light International Association and is composed of the following chapters: Map of the Philippines with locations of the different Chapters of BLIA Philippines
For example, the 1.1 kW Intermediate Technology Development Group Pico Hydro Project in Kenya supplies 57 homes with very small electric loads (e.g., a couple of lights and a phone charger, or a small TV/radio). [36] Even smaller turbines of 200–300 W may power a few homes in a developing country with a drop of only 1 m (3 ft).
Light Industry and Science Park (LISP) is the name of a series of industrial parks in the Philippines owned and developed by Science Park of the Philippines. [1] It has six locations, namely: LISP I in Cabuyao, Laguna, LISP II in Calamba, Laguna, LISP III in Santo Tomas, Batangas, LISP IV in Malvar, Batangas, Cebu Light Industrial Park (CLIP) in Lapu-Lapu City, and Hermosa Ecozone Industrial ...
These were later swapped for four "Freedom Lights" in 1956. [60] In February 1964, flood lights were added on the 72nd floor [61] to illuminate the top of the building at night so that the building could be seen from the World Fair later that year. [62] The lights were shut off from November 1973 to July 1974 because of the energy crisis at the ...