Complex sentence: In studies of photosynthesis the einstein is sometimes used with a different definition of one mole of photons and photosynthetically active radiation (PAR) is usually reported in microeinsteins per second per square meter (μE m -2 s -1).
Split into simpler sentences: In studies of photosynthesis the einstein is sometimes used with a different definition of one mole of photons. As such, photosynthetically active radiation (PAR) is usually reported in microeinsteins per second per square meter (μE m -2 s -1).