03 September 2019 | 15:43 Asia/Singapore Building the world's most precise clock Associate Professor Murray Barrett from the NUS Centre for Quantum Technologies is building an atomic clock that will be accurate to a quadrillionth of a second. A clock of such precision could reveal and resolve some fundamental questions of physics https://www.bloomberg.com/news/features/2019-08-28/the-world-s-most-precise-clock-may-run-on-lutetium-or-ytterbium