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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.
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 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 ...
The Iloilo Flood Control Project (IFCP) is a project of the Department of Public Works and Highways (DPWH) in Iloilo City, Philippines. The project aims to reduce flood damage, which has been an almost yearly occurrence. Financed by the Japan Bank for International Cooperation (JBIC), the project is being implemented in two stages.
The name "Meralco" is an acronym for Manila Electric Railroad and Light ... total sale price of about $28 million (200 million pesos at the prevailing rate ...
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).
Flooding around the Balintawak Interchange is a problem, with the interchange being named in 2014 as one of the 22 most flood-prone roadways in Metro Manila. [4] In 2015, the Manila North Tollways Corporation , the concessionaire of NLEX, spent close to ₱70 million to improve the interchange's drainage systems to mitigate flooding. [ 5 ]