Around the concept of electromagnetic fields in school habitats

This paper is an attempt to introduce the definition of the concept of field in habitat electromagnetis school (SEMF). Niche concept is necessary because 33% of developed countries and 10-15% in other countries are under the effects of anthropogenic fields. The concept is built by analogy with the DEMF (Domestic Electro Magnetic Field. This paper is based on measurements taken in areas of educational institutions: University of Oradea (public = case study 1) and the High School "Samuil Vulcan" of town Beiuş (public = case study 2).