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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 Primary Atomic Reference Clock in Space ： ウィキペディア英語版 Primary Atomic Reference Clock in Space The Primary Atomic Reference Clock in Space or PARCS was an atomic-clock mission scheduled to fly on the International Space Station (ISS) in 2008, but cancelled to make way for the Vision for Space Exploration. The mission, to have been funded by NASA, involved a laser-cooled caesium atomic clock, and a time-transfer system using Global Positioning System (GPS) satellites. PARCS was to fly concurrently with the Superconducting Microwave Oscillator (SUMO)〔http://www.ips.gov.au/IPSHosted/NCRS/wars/wars2002/proceedings/invited/print/tobar.pdf〕 a different type of clock that was to be compared against the PARCS clock to test certain theories. The objectives of the mission were to have been: *Test gravitational theory *Study laser-cooled atoms in microgravity *Improve the accuracy of timekeeping on earth ==Experiment location== The proposed ISS location for the experiment was on the External Facility of the Japanese Experimental Module (JEM). This location afforded good views of the GPS constellation of satellites, needed for comparing space and ground clocks. In addition, the volume, available power, and coolant system were well matched to the mission requirements. 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「Primary Atomic Reference Clock in Space」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.