Ключевые слова: background, bright, brilliant, bulb, clever, closeup, coil, color, concept, conservation, creative, creativity, economical, efficiency, electricity, energy, environment, environmental conservation, eureka, fluorescent, glass, global warming, glow, glowing, halogen, idea, inspiration, invent, invention, isolated, lamp, light, light bulb, lighting, luminance, luminosity, outlet, power, saving, smart, socket, solution, solve, thought, thread, watt, white,