Ключевые слова: background, blue, bright, bulb, concept, conservation, design, eco, ecology, economical, economy, efficiency, efficient, electric, electricity, energy, energy saving, environment, environmental, equipment, flat, fluorescent, glass, house, idea, illuminate, innovation, inspiration, intelligence, lamp, lay, light, light bulb, lightbulb, lighting, modern, money, nature, object, power, save, saving, solution, spiral, symbol, technology, thinking, thought, watt, white,