Ключевые слова: arch, attract, attraction, attractive, design, education, electric, electricity, electromagnetic, element, energy, equipment, ferromagnetic, field, flat, force, graphic, gravitation, gravity, icon, illustration, iron, isolated, lightning, magnet, magnetic, magnetism, magnetization, magnetize, metal, metallic, natural, negative, north, physical, physics, polarity, pole, power, science, set, sign, south, steel, strength, symbol, technology, voltage,