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Ficus plant grown under a white LED grow light. A grow light is an electric light that can help plants grow. Grow lights either attempt to provide a light spectrum similar to that of the sun, or to provide a spectrum that is more tailored to the needs of the plants being cultivated (typically a varying combination of red and blue light, which generally appears pink to purple to the human eye).
Light-emitting diode (LED) lamps have replaced high-intensity discharge lamps (HID) as the most efficient devices in terms of Lumen (unit)s of light output per unit of power input, but are not yet as widely used. Continuing improvements in lifetime cost per lumen, long life power supplies, and banked or multi-LED fixtures are making LED lights ...
[4] [5] Along with onshore wind power, utility-scale solar is the source with the cheapest levelised cost of electricity for new installations in most countries. [ 6 ] [ 7 ] As of 2023, 33 countries generated more than a tenth of their electricity from solar, with China making up more than half of solar growth. [ 8 ]
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.
330 West 42nd Street, also known as the McGraw-Hill Building and formerly the GHI Building, is a 485-foot-tall (148 m), 33-story skyscraper in the Hell's Kitchen neighborhood of Manhattan in New York City, New York, U.S. Designed by Raymond Hood and J. André Fouilhoux in a mixture of the International Style, Art Deco, and Art Moderne styles, the building was constructed from 1930 to 1931 and ...