Abstract
This study clarified heat value that was derived from effects of magnetic field in space by metal objects with perturbative approach. Magnetic flux could be divided into 3 areas (outer metal object, inner metal object and boundary). This study derived each degenerated expression from Maxwell’s equations. Outer area should be considered magnetic flux distortion due to metal objects, on the other hand it could be assumed quasi steady state and none of electric current. Inner area could limit the range of frequency, magnetic permeability and electric conductivity. At boundary area, magnetic flux density or magnetic field strength is continuing, and the continuity could link the equations on inner and outer area.