In the article, on the basis of the authors model of formation of the observable physical space $R_3$ in the process of dynamics of special discrete one-dimensional vectorial objects, byuons, while minimizing their potential energy of interaction in the one-dimensional space $R_1$ formed by them, and based on the Weyls geometrical model of the electromagnetic field, the nature of this field consisting in a suitable variation of byuon interaction periods in the space $R_1$, is shown.