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Sensors for Measuring Light Available for Photosynthesis
Author(s) -
Federer C. A.,
Tanner C. B.
Publication year - 1966
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1933948
Subject(s) - spectral power distribution , photon , photosynthesis , irradiance , wavelength , range (aeronautics) , biological system , photodetector , measure (data warehouse) , physics , absorption (acoustics) , light energy , filter (signal processing) , spectral sensitivity , optics , materials science , biology , computer science , botany , database , composite material , computer vision
Consideration of energy absorption by photosynthesis indicates that photon flux density in the 400— to 700—nm wavelength range is best measure of light available for photosynthesis. When light spectral distribution changes, deviation of sensor spectral response from the photon response introduces errors in measurements. These errors are calculated for several sensors and spectral distributions. A selenium photovoltaic cell with a Written 85C filter is a simple system which closely approximates the photon response.