Electromagnetic fields

Introduction

Electromagnetic fields (EMFs) are produced by differences in voltage (electric field) or by electric current flow (magnetic field). A higher voltage difference or electric current leads to greater electromagnetic fields. Everyone is exposed to a complex mixture of weak electromagnetic fields in their living and working environment. Most of the workplaces, such as office environments, have only low electromagnetic fields that can be regarded as harmless. On the other hand, in some work environments there are higher EMFs that need to be taken into account. For example, occupational activities that can result to higher EMF exposure are electric welding, glue…