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''Scientific American'' (informally abbreviated ''SciAm'') is an American popular science magazine. It has a long history of presenting scientific information on a monthly basis to the general educated public, with careful attention to the clarity of its text and the quality of its specially commissioned color graphics. Many famous scientists, including Albert Einstein, have contributed articles in the past 170 years. It is the oldest continuously published monthly magazine in the United States. ==History== ''Scientific American'' was founded by inventor and publisher Rufus M. Porter in 1845 as a four-page weekly newspaper. Throughout its early years, much emphasis was placed on reports of what was going on at the U.S. Patent Office. It also reported on a broad range of inventions including perpetual motion machines, an 1860 device for buoying vessels by Abraham Lincoln, and the universal joint which now can be found in nearly every automobile manufactured. Current issues include a "this date in history" section, featuring excerpts from articles originally published 50, 100, and 150 years earlier. Topics include humorous incidents, wrong-headed theories, and noteworthy advances in the history of science and technology. Porter sold the publication to Alfred Ely Beach and Orson Desaix Munn I a mere ten months after founding it. Until 1948, it remained owned by Munn & Company.〔 Under Orson Desaix Munn III, grandson of Orson I, it had evolved into something of a "workbench" publication, similar to the twentieth century incarnation of ''Popular Science''. In the years after World War II, the magazine fell into decline. In 1948, three partners who were planning on starting a new popular science magazine, to be called ''The Sciences'', purchased the assets of the old ''Scientific American'' instead and put its name on the designs they had created for their new magazine. Thus the partnerspublisher Gerard Piel, editor Dennis Flanagan, and general manager Donald H. Miller, Jr.essentially created a new magazine.〔Lewenstein, B. V. (1989). Magazine Publishing and Popular Science After World War II. American Journalism, 6(4), 218-234.〕 Miller retired in 1979, Flanagan and Piel in 1984, when Gerard Piel's son Jonathan became president and editor; circulation had grown fifteen-fold since 1948. In 1986, it was sold to the Holtzbrinck group of Germany, which has owned it since. In the fall of 2008, ''Scientific American'' was put under the control of Nature Publishing Group, a division of Holtzbrinck. Donald Miller died in December 1998, Gerard Piel in September 2004 and Dennis Flanagan in January 2005. Mariette DiChristina is the current editor-in-chief, after John Rennie stepped down in June 2009.〔 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「Scientific American」の詳細全文を読む スポンサード リンク
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