Ключевые слова: adult, bright, business, businessman, businesswoman, caucasian ethnicity, closeup, concentration, concepts, creativity, discovery, efficiency, electric lamp, electricity, environment, equipment, expertise, fuel and power generation, glass, glowing, hand, holding, human hand, ideas, illuminated, imagination, innovation, inspiration, intelligence, invention, isolated, light bulb, lighting equipment, looking, males, men, one person, power supply, science, solution, studio shot, success, symbol, technology, white background, women, working, young adult,