In the paper we introduce a general formula describing the time- space distribution of the magnetic pressure in a conducting tubular workpiece placed in external magnetic field having the character of a damped sinusoid. For the case of a circular workpiece we determine ...

The paper presents the problems of the light field analysis applied to optimization of total expenses of electric lighting systems. The light field is described by means of the Fredholm integral equations. For purposes of the cost optimization a modified genetic algorithm is used.&...

The paper is devoted to the problems of magnetic circuits with pemanent magnets for generating strong homogeneous magnetic fields. An appropriate mathematical model is expressed by a system of nonlinear partial differential equations of the second order for vector potential A (x,y). The...

The paper describes the magnetic resonance imaging method applicable mainly in MRI and MRS in vivo studies. We solved the effect of changes of magnetic fields in MR tomography. This article deals with the reverse reconstruction results obtained from the numerical simulation ...

The perfect analogy allows solving of heat transfer problems by a lot of advanced methods of electrostatics or circuit theory for simple cases. Two quantities can be computed in principle: electric potential or electric field strength, which corresponds to two driving quantities:...

The paper deals with numerical modeling of a three-phase harmonic-current carrying shielded line. In most similar cases, computation of magnetic field and other associated quantities is realized using the finite element method that is effective, reliable and the results obtained corre...

This contribution deals with the calculation of the magnetic field in the vicinity of an AC electric railway. We focused on an AC 25 kV; 50Hz power-supply system. The calculation procedures are based on the numerical solution of the Helmholtz equation. The method of...

Numerous electrostatic fields are characterized by the presence of singularities (for example, at the corners or along the edges of electrically conductive charged bodies). Solutions to the tasks involving such elements by classic low-order differential methods often lead to inaccurate results.&#...

At first, there are very shortly discussed magnetic materials used at these applications. Then, normal Watson circuit with two permanent magnets, which are exciting magnetic field at working space, is discussed. In conclusion, magnetic circuit similar to Watson circuit is presented.&#...

Paper deals with some effects of various kinds of electromagnetic fields on human body. Some methods of investigation are introduced.

The article describes a test of numerical model of the electron beam according to present knowledge of references [1]- [5]. The basic configuration of the electron beam was verified in Institute of Scientific Instruments Academy of Sciences of the Czech Republic experimentally.&#...

In the work presented an algorithm for evaluation of inverse Discrete Fourier Transform (DFT) and Bessel functions have been elaborated with the purpose of determining of the time – harmonic electromagnetic field distribution in a quasi-3D system with rotational symmetry. An obje...