Photobiology: An Overview

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Abstract
Without the sun, life as we know it could not exist on earth. Solar energy (electromagnetic radiation) provides both the warmth required to make the planet habitable and the primary energy source for living organisms. How solar energy might influence and interact with living things has been of interest since ancient times. Today, the influences and interactions of nonionizing electromagnetic radiation, both from the sun and man-made sources, on biological systems, and the use of such radiation to study biological processes constitute the purview of the science of photobiology. Areas of interest falling under this general heading include vision, photosynthesis, environmental photobiology, bioluminescence, photomedicine, and others.