On the Quantitative Explanation of Stomatal Transpiration

adhering air layer angle VYX box Q4 brass BROWN and ESCOMBE calculated cell walls cf figs circular evaporating surface cm² leaf surface computed conductor cuticular transpiration determined diffusion curve diffusion lines Fig dotted lines dv f(u,v electrical resistance equal vapour concentration equation ESCOMBE's formula explained quantitatively external resistance Fick's law filter paper Helianthus annuus HONERT HUBER humidity deficit incipient drying interference of pores Laplace equation leaf disc leaf holder macro vapour cup macro vapour shell micro mm² number of stomata Ohm's law perforated area perforated septa perforated septum quantity R₁ radius relation between stomatal relative evaporation power relative evaporation rate RENNER resistance per cm² septa septum SIERP and SEYBOLD STÅLFELT STÅLFELT's curve STEFAN stomata per cm² stomatal pore stomatal slit stomatal transpiration substomatal cavity substomatal space surfaces of equal temperature theoretical analysis thickness total diffusion resistance total resistance transpiration rate transpiration resistance u²+s² uv+ys water vapour concentration μ²