Category Archives: History of lighting


How Does a Street Light Work?


Photocells detect if light is needed. Photocells are light-sensitive sensors that respond to the amount of light detected. When the light is too low, such as at dusk or under heavy overcast skies, the sensor tells the computing unit within the streetlight to activate the flow of electricity. When...


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A Visual History of Street Lighting from the 19th and 20th Centuries


Street Lighting is a critical component of any urban landscape providing illumination for circulation, ambiance, and security in outdoor environments. And while LEDs have become the gold standard for new street lighting technology, cities around the world once relied on gas, carbon arc, and incandescent lamps to light their...


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History of Street Lighting


Lack of natural light during nighttime in the urban environment was always a problem. From basic inconvenience that people cannot see where they are going to the greater chance of being attacked or mugged during the night. Because the problem was there since humans started living together, history of...


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8 Advantages of LED Lighting


Learn why it makes sense to say goodbye to fluorescent, halogen and other technologies. LEDs have swept the conventional lighting marketplace for a variety of reasons, most notably their extended lifespans, reduced energy consumption and lower maintenance requirements. By 2030, the DOE estimates that LED lighting could save 190 terawatt hours...


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Learn About LED Lighting


The Basics of LED Lighting What are LEDs and how do they work? LED stands for light emitting diode. LED lighting products produce light approximately 90% more efficiently than incandescent light bulbs. How do they work? An electrical current passes through a microchip, which illuminates the tiny light sources we call...


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How is a light source’s spectrum measured?


With all the buzz about how the output spectrum of LED lighting can be varied for applications like street lighting, human-centric lighting, and horticultural lighting, the question occurs: how is the spectrum determined anyway? With a nifty little device called a spectroradiometer. The typical test set up looks like...


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High Tech, Historical Revival Lighting


Lighting has always been driven by technology and available sources of energy. As tech got more advanced there was an explosion of innovation in the shapes, styles, and placement of light fixtures and lamps.   Somewhere, Thomas Alva Edison is laughing out loud. Even an act of Congress couldn’t break...


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A History of Outdoor Lighting: 20th Century


Couples driving to dinner parties, neighborhood kids trick-or-treating, workers safely walking to their cars after a long day at the office: these are all activities made possible by outdoor lighting technology. Throughout the 20th century, inventors and innovators developed new technologies to light our streets more effectively and create a...


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