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Helsinki ( HEL-sink-ee or (listen) hel-SINK-ee; Finnish: [ˈhelsiŋki] (listen); Swedish: Helsingfors, Finland Swedish: [helsiŋˈforsː] (listen); Latin: Helsingia) is the capital, primate and most populous city of Finland. Located on the shore of the Gulf of Finland, It's the chair of the region of Uusimaa in southern Finland, and has a population of 656,229. The city's urban area has a population of 1,268,296, making it by far the most populous metropolitan area in Finland as well as the nation's most important center for politics, education, finance, culture, and research; while Tampere in the Pirkanmaa region, situated 179 kilometres (111 mi) to the north from Helsinki, is the second largest urban area in Finland. Helsinki is situated 80 kilometres (50 mi) north of Tallinn, Estonia, 400 kilometers (250 mi) east of Stockholm, Sweden, and 300 km (190 mi) west of Saint Petersburg, Russia. It has close historical ties with these 3 cities.
Together with the cities of Espoo, Vantaa, and Kauniainen, and surrounding commuter cities, Helsinki creates the Greater Helsinki metropolitan area, which has a population of over 1.
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Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman who has been described as America's greatest inventor. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures. These inventions, which include the phonograph, the motion picture camera, and early versions of the electric light bulb, have had a widespread impact on the modern industrialized world. He was one of the first inventors to apply the principles of organized science and teamwork to the process of invention, working with many researchers and employees. He established the first industrial research laboratory.Edison was raised in the American Midwest; early in his career he worked as a telegraph operator, which inspired some of his earliest inventions.