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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).
Continuing improvements in lifetime cost per lumen, long life power supplies, and banked or multi-LED fixtures are making LED lights more suitable for large-scale plant lighting. Compact fluorescent lamps are less efficient than LED or HID lamps, but run relatively cool and are widely available in simple fixtures and therefore continue to be used.
Hydroponics research mimicking a Martian environment uses LED lighting to grow in a different color spectrum with much less heat. Ray Wheeler, a plant physiologist at Kennedy Space Center's Space Life Science Lab, believes that hydroponics will create advances within space travel, as a bioregenerative life support system. [35]
Conventionally generated and sourced electricity remains the most used source for landscape lighting in the early twenty-first century. With the combination of increasing demand for more efficient lighting, increasing availability of sustainable designs, global warming considerations, and aesthetic and safety concerns in garden and landscape design the methods and equipment of outdoor ...
Solar garden lights serve as a decorative element in outdoor and garden settings. In some cases, solar lights [1] might be more practical than traditional incandescent bulbs. [2] They often are simple to set up and can be installed by laypeople. Solar lights may be found on the market in a variety of shapes, sizes, types, designs, and features ...
The first tree lighting occurred in December 1933, and became an annual tradition from that point forward. In December 1936, two trees went up at Rockefeller Center, which also marks the same year ...
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