TY JOUR TI Quantitative Assessment of the Complexity of the Electric and Magnetic Fields Study in Various Physics Textbooks KW didactics KW concept KW training KW complexity KW knowledge folding KW educational text KW textbook KW physics KW electrodynamics. JO Scientific Research and Development. Socio-Humanitarian Research and Technology AU Mayer, R.V. PY 2019 IS 8 PB INFRA-M Academic Publishing LLC.