Abstract
Ultraweak photon emission from biological organisms, commonly referred as biophoton emission, is known to be closely related to vital processes and biological activities, observable quite generally in nature in the absence of any external excitation. The intensity of the photon emission is estimated to be in the order of less than 10-16 W/cm2 on sample surface. The excitation mechanisms of this phenomenon are based on chemical excitation in the living system and considered to originate from internal biochemical reactions associated with metabolic processes.
© 1996 Optical Society of America
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