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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リンク Normalnull ： ウィキペディア英語版 Normalnull ''Normalnull'' ("standard zero") or Normal-Null (short N. N. or NN ) is an outdated official vertical datum used in Germany. Elevations using this reference system were to be marked "Meter über Normal-Null" (“meters above standard zero”). Normalnull has been replaced by Normalhöhennull (short NHN). == History == In 1878 reference heights were taken from the Amsterdam Ordnance Datum and transferred to the New Berlin Observatory in order to define the Normalhöhenpunkt 1879. Normalnull has been defined as a level going through an imaginary point 37,00 m below ''Normalhöhenpunkt 1879''. When the New Berlin Observatory was demolished in 1912 the reference point was moved east to the village Hoppegarten (now part of the town of Müncheberg, Brandenburg, Germany).〔S. German: ''Was ist „Normal-Null”?''. In: ''Physikalische Blätter'' 1958, vol 14, issue 2, P. 62–66 〕 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「Normalnull」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.