A contactless power transfer system is proposed. Computations that can be delegated include inversion and exponentiation modulo any number m. By replacing at least a part of one coil of the outer coils by aluminum, the gradient coil assembly can be significantly improved in respect to cost and weight without reducing the accuracy in respect to the generation of diagnostic images based on magnetic resonance information. The family construction module organizes the various computers connected to the network into immediate and extended families of related computers. In addition, the invention provides devices for producing laminates in conjunction with the devices suitable for the method outlined above. A second arrangement establishes a distance between the first and second positions.