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Check out more gardening recommendations: 21 Best Gardening Tools to Tend Your Plants Like a Pro. 10 Self-Watering Planters to Make Gardening Much Easier
The best outdoor patio plants for your backyard include low-maintenance annual blooms and perennial shrubs, ... 32 Low Light Indoor Plants That Can Survive in the Darkest Corners of Your Home.
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).
During the day, light enters the greenhouse via the windows and is used by the plants. Some greenhouses are also equipped with grow lights (often LED lights) which are switched on at night to increase the amount of light the plants get, hereby increasing the yield with certain crops.
An important property of light fixtures is the luminous efficacy or wall-plug efficiency, meaning the amount of usable light emanating from the fixture per used energy, usually measured in lumen per watt. A fixture using replaceable light sources can also have its efficiency quoted as the percentage of light passed from the "bulb" to the ...
When installed it appears to have light shining from a hole in the ceiling, concentrating the light in a downward direction as a broad floodlight or narrow spotlight. Different types of recessed lighting in a warehouse "Pot light" or "canister light" implies the hole is circular and the lighting fixture is cylindrical, like a pot or canister.