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Outdoor Site-Lighting Performance (OSP) is a method for predicting and measuring three different aspects of light pollution: glow, trespass and glare. [60] Using this method, lighting specifiers can quantify the performance of existing and planned lighting designs and applications to minimize excessive or obtrusive light leaving the boundaries ...
A utility pole, commonly referred to as a transmission pole, telephone pole, telecommunication pole, power pole, hydro pole, telegraph pole, or telegraph post, is a column or post used to support overhead power lines and various other public utilities, such as electrical cable, fiber optic cable, and related equipment such as transformers and ...
LEDs are usually used as the primary lighting source of modern solar street lights, as the LED will provide much higher luminosity with lower energy consumption. The energy consumption of an LED fixture is at least 50% lower than the HPS fixture counterpart which is widely used as the lighting source in traditional street lights.
This 33-foot string features 100 bright LEDs with eight different lighting modes, including combination, fading, and steady on, so you can match your outdoor lighting atmosphere to the event or ...
The first proper lightning rod was invented by Father Prokop Diviš, a Czech priest and scientist, who erected a grounded lightning rod in 1754. Diviš's design involved a vertical iron rod topped with a grounded wire, intended to attract lightning strikes and safely conduct them to the ground. [2]
The first public demonstration of outdoor electrical lighting in the US was in Cleveland, Ohio, on April 29, 1879. [1] [8] Inventor Charles F. Brush had been perfecting the dynamo arc light, which could produce a glow equivalent to 4,000 candles in a single lamp. [8]