Introduction

Electromagnetism is a part of science that includes electricity, magnetism and electromagnetic fields phenomena. Biolectromagnetism is the study of how electromagnetism interacts with biological processes produced by cells, tissues and organisms. The properties of electromagnetic waves necessary for understanding the various effects of electromagnetic fields on biological systems are briefly presented. They describe the fundamental aspects of electric and magnetic fields as well as the electromagnetic wave. In addition to the naturally occurring electromagnetic radiations, man-made sources of electromagnetic fields produced after the electrification began to exist in the human environments. Now, electromagnetic fields on earth are consists of two components, electromagnetic fields generated from natural phenomena and man-made electromagnetic fields. These two differently originated sources of non-ionizing radiation exist together and around us. Electromagnetic radiations of broad frequency from the non-ionizing range are used in biomedical imaging in medicine and biology.