Electrical Impedance Tomography

  • Researchers image roots in the ground

    Maximilian Weigand (left) and Prof. Dr. Andreas Kemna of the University of Bonn use electrical impedance tomography to visualize the root activity of plants. © Photo: Volker Lannert/Uni Bonn

    It's a familiar hazard of vacation time: While you're conspicuously absent, your colleagues in the office forget to water and fertilize the plants – often leaving behind nothing but a brownish skeleton. Whether a plant thrives or wastes away depends above all on whether its roots get enough water and nutrients. Geophysicists at the University of Bonn have now visualized such processes for the first time using electrical impedance tomography. The researchers have now published their results in the scientific journal "Biogeosciences".