To sequentially operate, output radiation fields and energy densities, generate an electromagnetic field and control the radiation fields or energy densities of an apparatus, by processing on the basis of a specific mathematic expression measured values of a local area measured by a one-piece type electromagnetic field sensor having an electric field and a magnetic field probes.

A radiation field-measuring, operating, outputting apparatus has a spherical electromagnetic field sensor 1 of a radius of, e.g. 8 mm, a power source 4, an operating device 6, a display device 6, etc. The sensor 1 includes, for instance, eight magnetic field probes and six electric field probes incorporated therein, measures simultaneously a magnetic field and an electric field in the vicinity of the same point and a gradient of each field based on expressions I, II and III, and operates and outputs a radiation field and an energy density. A radiation field generation-controlling apparatus has, for example, two doughnut ring-shaped charged electrodes rotating in opposite directions and arranged with the same center point, and a magnetic columnar block having a metallic magnetic column at the center of the electrodes, and generates the radiation field based on the expressions I, II and III.