Ключевые слова: alternative, background, black, bright, bulb, conservation, ecology, economic, economical, economy, efficiency, efficient, electric, electrical, electricity, energy, environmental, equipment, finance, fire, fluorescent, glass, idea, illuminate, illuminated, improvement, innovation, invention, isolated, lamp, light, lightbulb, lighting, modern, object, one, power, powerful, progress, save, saving, savings, shiny, single, solution, spiral, technology, tube, watt, white,