Ключевые слова: alternating, ampere, background, black, classical, current, dark, design, development, economics, economy, electrician, electrics, energetics, energized, energy, engineering, glass, gloss, glow, glower, halo, halogen, heating, hot, idea, illumination, infrared, insight, isolated, lamp, lights, lumen, metal, object, plasma, power, powered, save, seen, spiral, structure, ten, think, through, transparent, two, vertical, wallpaper, watt,