The increase in the conductivity of an electrolyte solution when the applied voltage has a very high frequency is known as Debye–Falkenhagen effect, named after Peter Debye and Hans Falkenhagen who published about it 1928. p. 101 Dispersion of conductance at high frequenciesP. Debye, H. Falkenhagen, Phys. Z., 29, 212; 401 (1928) Impedance measurements on water-p-dioxane and the methanol-toluene systems have confirmed Falkenhagen's predictions made in 1929.

See also Peter Debye Debye length Hans Falkenhagen Wien effect

References