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2. Grow light - Wikipedia

   en.wikipedia.org/wiki/Grow_light

   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).

3. 10 Grow Lights That Actually Work to Help Your Plants Thrive

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   In low light environments, many plants will struggle to stay healthy. We tapped testers to find the best grow lights for all your indoor herbs and plants. ... Grow Lights for Indoor Plants ...

4. The 8 Best Indoor Grow Lights to Help Your Plants ... - AOL

   www.aol.com/lifestyle/8-best-indoor-grow-lights...

   4. Root Farm All-Purpose LED Grow Light. Best for Starting Seeds. Starting plants from seed lets you get a jumpstart on the growing season, so your plants are ready to go in the ground as soon as ...

5. Your Grow Light Is Probably Too Far from Your Plants—Here's ...

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   Here's what you need to know to place grow lights at the right distance, depending on the type of light and the plants you're growing. Related: The 11 Best Grow Lights to Help Your Plants Thrive ...

6. Photosynthetic efficiency - Wikipedia

   en.wikipedia.org/wiki/Photosynthetic_efficiency

   Above about 10,000 lux or ~100 watts/square meter the rate no longer increases. Thus, most plants can only use ~10% of full mid-day sunlight intensity. [6] This dramatically reduces average achieved photosynthetic efficiency in fields compared to peak laboratory results. However, real plants (as opposed to laboratory test samples) have many ...

7. Sodium-vapor lamp - Wikipedia

   en.wikipedia.org/wiki/Sodium-vapor_lamp

   This problem was solved by Michael Arendash [8] at the GE Nela Park plant. The first commercial high-pressure sodium lamps were available in 1965 from companies in the United States, the United Kingdom, and the Netherlands; at introduction a 400 watt lamp would produce around 100 lumens per watt. [7] [9]