Further studies of the heat transfer from a leaf.
The resistance to the diffusion of heat and water vapor external to a leaf, can be derived from measurement of the rate of change of the leaf temperature, after a sudden alteration of the intensity of irradiation. The theory of the method has been developed to accommodate the case of a leaf that is freely transpiring, exchanging longwave radiation with the environment and with different internal resistances on the 2 sides of the leaf. It has been successfully applied to measurements on wet blotting paper in the laboratory.
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Commonwealth Scientific and Industrial Research Organization, Irrigation Research Laboratory, Griffith, N.S.W., Australia.