chapter 1. Methods of investigation and constructional materials -- chapter 2. Fundamental equations of electromagnetic field -- chapter 3. Transfer and conversion of field power -- chapter 4. Screening of constructional parts -- chapter 5. Magnetic fields near iron surfaces -- chapter 6. Electromagnetic phenomena in metals with constant permeability -- chapter 7. Electromagnetic phenomena in ferromagnetic bodies -- chapter 8. Forces in electrodynamic systems -- chapter 9. Local heating of structural parts -- chapter 10. Methods of experimental investigations -- chapter 11. Conclusion.