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We report on the comparison between three absolute gravimeters that took place in April 2010 at the Laboratoire National de Métrologie et d'Essais. The three instruments (FG5#209 from METAS, Switzerland, IMGC-02 from INRIM, Italy, and CAG from LNE-SYRTE, France) rely on different methods: optical and atomic interferometry. We discuss their differences and their similarities. We compare their measurements...
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