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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 Femto- ： ウィキペディア英語版 Femto- femto- (symbol f) is a unit prefix in the metric system denoting a factor of 10−15 or . Adopted by the 11th General Conference on Weights and Measures, it was added in 1964 to the SI.〔(BIPM - Resolution 8 of the 12th CGPM )〕 It is derived from the Danish word ''femten'', meaning "fifteen". Examples of use: * Weight of the HIV-1 virus is about 1 x 10−18 kg, which equals 1 x 10−15 g or 1 fg. The HIV-1 virus weighs about 1 x 10−18 kg or 1 fg. Orders of magnitude (mass) * a proton has a diameter of about 1.6 to 1.7 femtometres. * More examples available. The femtometre shares the unit symbol (fm) with the older non-SI unit ''fermi'', to which it is equivalent. The fermi, named in honour of Enrico Fermi, is often encountered in nuclear physics. ==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「Femto-」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.