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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク magnetic midnight ： ウィキペディア英語版 magnetic midnight Magnetic midnight is the time of day when the North or South Magnetic Pole is exactly in between the sun and an observer on earth's surface. This is the best time for observing auroras.〔(''McGraw-Hill Encyclopedia of Science & Technology''. Online August 7, 2008. )〕 Because Earth's magnetic poles do not coincide with its geographical poles—the angle between Earth's rotation axis and magnetic axis is about 11°–magnetic midnight differs from conventional midnight. In most of the United States, magnetic midnight occurs about an hour earlier.〔http://www.eaae-astronomy.org/WG3-SS/WorkShops/Auroras.html〕 ==References== 〔 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「magnetic midnight」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.