title: Simple light guide for measuring irradiance in an aqueous oxygen electrode chamber.
abstract: The light-dependent reactions of photosynthesis are often measured with Clark-type oxygen electrodes yet the irradiance level inside aqueous oxygen electrode reaction vessels is seldom reported due to the difficulty of measuring light inside a small volume chamber. We describe a simple light guide terminating in a 90 degrees prism that can be inserted into a reaction vessel. Incoming irradiation is directed to a commercially available quantum sensor positioned at the other end of the light guide. Both materials for and construction of the device are inexpensive.
authors.affiliation: Department of Botany, University of Wisconsin Madison, 430 Lincoln Dr., WI, USA.
authors.forename: Jeff
authors.initials: J
authors.lastname: Vogtschaller
authors.forename: Robert
authors.initials: R
authors.lastname: Wise