3 ms·
Sure, but F2 is a bit more accurate: "As of February 2016 the IT-CsF2 cesium fountain clock started reporting a uB of 1.7 × 10−16 in the BIPM reports of evaluat
by OhMeadhbh 10mo ago
Sure, but F2 is a bit more accurate: "As of February 2016 the IT-CsF2 cesium fountain clock started reporting a uB of 1.7 × 10−16 in the BIPM reports of evaluation of primary frequency standards." ( from https://web.archive.org/web/20220121090046/ftp://ftp2.bipm.org/pub/tai/data/PSFS_reports/it-csf2_57414-57444.pdf https://web.archive.org/web/20220121090046/ftp://ftp2.bipm.o... )