Category: Physics 2016 Hyperfine Spectrum of Antimatter H Dec 20 2016 LIGO and the GW150914 Discovery Feb 21 2016 Observing Gravitational Waves Feb 06 2016 Periodic Table Row Seven Complete Jan 08 2016 Atomic Energy Toys from the 50s Jan 08 2016 2015 Kilogram Conflict Resolved at Last Oct 14 2015 2014 Gravity Mar 01 2014 2013 The Foucault Pendulum Sep 22 2013