From Twitter https://twitter.com/drsekula: RT @symmetrymag: Related: A primer on gravitational-wave detectors: http://www.symmetrymagazine.org/article/a-primer-on-gravitational-wave-detectors #AAASmtg #AAAS2017 https://twitter.com/symmetrymag/status/833043409380089856/photo/1 https://chirp.cooleysekula.net/attachment/22876