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The Quartz Crisis, (also known as the Quartz Revolution),〔(Smithsonian: The quartz revolution revitalized the U.S. watch industry. )〕〔(Harvard Business Review: Seiko Watch Corporation: Moving Upmarket )〕 is a term used in the watchmaking industry to refer to the economic upheavals caused by the advent of quartz watches in the 1970s and early 1980s, which largely replaced mechanical watches. It caused a decline of the Swiss watchmaking industry, which chose to remain focused on traditional mechanical watches, while the majority of world watch production shifted to Asian companies that embraced the new technology. ==Swiss hegemony== During World War II, Swiss neutrality permitted the watch industry to continue making consumer time keeping apparatus while the major nations of the world shifted timing apparatus production to timing devices for military ordnance. As a result, the Swiss watch industry enjoyed an effective monopoly. The industry prospered in the absence of any real competition. Thus, prior to the 1970s, the Swiss watch industry had 50% of the world watch market.〔David Landes, Revolution in Time: Clocks and the Making of the Modern World, Cambridge, Massachusetts, 1983.〕 In the early 1950s a joint venture between the Elgin Watch Company in the United States and Lip of France to produce an electromechanical watch – one powered by a small battery rather than an unwinding spring – laid the groundwork for the quartz watch.〔Rene Rondeau, The Watch of the Future: The Story of the Hamilton Electric Watch, Corte Madera, California, 1992, pp. 50.〕 Although the Lip-Elgin enterprise produced only prototypes, in 1957 the first battery-driven watch in production was the American-made Hamilton 500. In 1954, Swiss engineer Max Hetzel developed an electronic wristwatch that used an electrically charged tuning fork powered by a 1.35 volt battery. The tuning fork resonated at precisely 360 Hz and it powered the hands of the watch through an electro-mechanical gear train. This watch was called the Accutron and was marketed by Bulova, starting in 1960. Although Bulova did not have the first battery powered wristwatch, the Accutron was a powerful catalyst, as by that time the Swiss watch manufacturing industry was a mature industry with a centuries-old global market and deeply entrenched patterns of manufacturing, marketing and sales. In 1962, the Centre Electronique Horloger (CEH) was established in Neuchâtel to develop a Swiss-made quartz wristwatch, while simultaneously in Japan, Seiko was also working on an electric watch and developing quartz technology.〔(Markets in Time: The Rise, Fall, and Revival of Swiss Watchmaking )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Quartz crisis」の詳細全文を読む スポンサード リンク
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