Ключевые слова: advanced, alternative, appliance, appliances, assistant, bright, brittle, bulb, business, change, cheaply, cheapness, clamp, coil, coiled, conducive, conducting, contact, current, development, ecology, economic, economical, economically, economics, electric, electrical, electricity, element, energetic, energies, energy, exchangeable, fluorescent, fragile, glass, home, house, idea, illume, illuminate, illumination, illumine, incandescent, indoor, industries, industry, innovation, innovations, lamp, lamplight, light, lighten, lighting, line, lit, part, replace, replaced, replacement, save, saving, scroll, space, spare, spiral, technologies, technology, tubes, view, vision, volt, volts, watt, wattage, watts, whorl, yellow,