Vapotranspiration in Biological System by Thermal Imaging

Transpiration from porous materials such as leaves, stones, or human skin plays an important role in thermographic analysis due to evaporation. The change of physical state from liquid to vapor takes place at the interface of materials with surrounding air exactly where thermal infrared radiation is radiated. This chapter studies with the possibility to obtain quantitative evaluation of evaporation rate from non contact temperature measurements. The use of the localized high-intensity cooling on surface caused by evotranspiration has to be considered as a tool of inspection in diagnostics. A wide review of applications in plant physiology is here presented and some cases of follow-up of trauma in athletes are as well reported.