Ключевые слова: abstract, art, background, black, brain, bright, bulb, business, clip, concept, creative, design, drawing, education, efficient, electric, electrical, electricity, energy, energy saving, fluorescent, graphic, halogen, human, icon, idea, illumination, illustration, innovation, inspiration, invention, isolated, light, lightbulb, low energy, minimal, minimalism, outline, person, power, ray, shine, sign, silhouette, simple, symbol, technology,