GREENHOUSE LIGHTING
2 . Measure of light f or plants (400 to 700 nm): • Photosynthetically Active Radiation (PAR), this is measured in the range of 400-700 nm o The unit for measuring instantaneous light incident upon a surface is micromoles per square meter per second (or µmol/m2/s) - this is the amount of energy (photons or particles of light ) hitting a square meter every second.
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