Ключевые слова: attract, attracting, attraction, background, blue, brass, concept, copy, effort, element, equipment, experiment, field, flat, force, gravity, horseshoe, induction, iron, lab, laboratory, lay, light, magnet, magnetic, magnetize, metal, north, object, physics, polarity, power, red, school, science, scientific, screw, shape, sign, south, space, strength, table, text, top, view, wooden,