Ключевые слова: abstract, arc, blue, conductivity, construction, current, danger, dark, design, electrical, electricity, energy, engineering, equipment, experiment, fire, glowing, ground, hazard, high voltage, industrial, innovation, laboratory, light, lightning, machine, manufacturing, metal, modern, night, orange, panel, power, precision, research, safety, science, shock, sparks, technical, technology, voltage, welding,