LEDs are able to counteract these inefficiencies. Plants, however, only have receptors for red (635-700nm) and blue (450-490) light, so they are unable to process the rest of the spectrum effectively. This is a blend of every known light wavelength - from infra-red to ultraviolet - with green and yellow light as the most intense (520-590nm). When sunlight does reach plants on the ground, it is ‘white light’. The Earth’s rotation causes the sun to constantly change position, meaning most regions of the world experience days that are too short, too cold, or too hot to grow plants. While the sun is the ultimate resource, it is not infallible. While photosynthesis originally evolved as a reaction to sunlight, the development of indoor farming has proven that indoor grow lights can be as, if not more, effective than the sun. There’s a lot more to photosynthesis, but for our conversation about LEDs, this is a perfect summary.
Light + 6H2O (water) + 6CO2 (carbon dioxide) → C6H12O6 (glucose) + 6O2 (oxygen)
The largest molecules become plant cell walls, others are used during plant metabolic functions, and the rest provide humans and animals with important food energy.įrom a plant biology standpoint, the entire process can be summarized as: As the plant absorbs more and more light, it builds complicated glucose chains into larger compounds of cellulose and starch. The plant then uses ATP and CO2 from the surrounding environment to make glucose, a simple sugar molecule. When chlorophyll is exposed to light, the cell goes through a complicated chemical reaction, converting light energy into molecules of potential chemical energy called ATP. Chloroplasts are parts of plant cells that contain the light-absorbing chlorophyll that gives a plant its green color. Photosynthesis takes light energy and converts it into potential chemical energy, which a plant stores in the form of sugar.
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