Herleitung der Kraftgesetze für sämtliche magnetischen und sämtliche elektrischen Schallwandler aus je einem allgemeinen Gesetz

The laws of force for all types of magnetic and all types of electric transducers are derived from two general laws. If the magnetic energy of a system of two coupled coils and the electric energy of two coupled electric leads respectively is calculated, the mechanical force is generally given by the derivative of the energy with respect to the variable co-ordinate, supposing that there exists only one spatial variable. The different types of transducers result from a proper choice of this variable co-ordinate. Some new aspects for the systematology of electroacoustic transducers are obtained by this derivation.