...This was brought to Europe by Arabs engaged in trade with China, and by the end of the 12th century, compasses had begun to be used in the Mediterranean. In Europe, dry compasses, with a magnetic needle supported by a pivot, were invented and divided into 32 points. The invention of the compass marked the end of the era of primitive navigation, in which the general direction was determined by the position of celestial bodies. ... *Some of the terminology explanations that mention "dry compass" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…これが中国貿易に従事していたアラブ人の手によってヨーロッパに伝わり,12世紀の終りころには地中海で羅針盤が使用されるようになった。ヨーロッパではピボットで磁針を支える乾式羅針盤が考案され,また32方位に分割された。羅針盤の発明により,天体の位置によってだいたいの方位を知る原始航海術の時代は終りを告げた。… ※「乾式羅針盤」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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