Introduction
Nowadays civilization may be characterized by the rapid growth of applications of the number and power of electromagnetic field (EMF) sources in, for instance, telecommunications, industry, science, medicine (ISM), and domestic uses. This growth has been accompanied by the necessity of measuring the electric field (E), magnetic field (H), and power density (S) in three main areas: Measurements of free propagating electromagnetic (EM) waves in telecommunications, radiolocation, radio navigation, radio astronomy, geophysics, and other areas. Here may include measurements relating to antennas (radiation pattern, gain, calibration). Electromagnetic interference (EMI) measurements to assure undisturbed coexistence of devices and systems in an EM environment that are subjects of electromagnetic compatibility (EMC). These measurements are related to the operation of the above-mentioned services as well as to many other sources of EMI, including electric motors and combustion engines, overhead power lines, information networks and devices, atmospheric discharges, and others. Biosphere exposure measurements relating to labor safety, especially in close proximity to EMF-generating devices and systems, as well as environmental protection and, first of all, general public protection.
Introduction, Page 1 of 2
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