ABSTRACT
This chapter presents selected comments related to the problem of electromagnetic fields (EMFs) quantification. The comments are formulated on the grounds of well-known rules of EMF metrology. The chapter focuses mainly upon accuracy of procedures applied in bioelectromagnetics, especially those of an electromagnetic nature. In far-field EMF measurements, errors are estimated at a level not significantly exceeding 10". The chapter considers H-field measurement using small loop antennas (probes) and E-field measurement using short dipole antennas for bioelectromagnetic purposes. It discusses examples of derived quantities, i.e., quantities calculated on the ground of E- and/or H-field measurement. The chapter confirms that in the case of the SAR definitions, the same assumptions were taken into account as in the simplest technological approach. While thermal effects are of concern, the temperature measurement, its value, and distribution is of importance. In practice, two values of a measured quantity, i.e., effective value (root mean square, RMS) and amplitude (peak), are considered.
