jrgilles
Well-known member
PAR: Photosynthetically active radiation, often abbreviated PAR, designates the spectral range (wave band) of solar radiation from 400 to 700 nanometers that photosynthetic organisms are able to use in the process of photosynthesis. This spectral region corresponds more or less with the range of light visible to the human eye.
Photosynthetically active radiation - Wikipedia, the free encyclopedia
Photosynthetically active radiation - Wikipedia, the free encyclopedia