2013年7月14日下午3:00,Department of Physics, University of Washington的Paul Boynton教授来我实验室进行学术交流,作了题为Empirically testing a foundation of GTR的报告。School of Physical Sciences, University of California Irvine的Eric Berg博士作了题为Measurement of G Using a Cryogenic Torsion Pendulum, The Story up to 2008的报告,Riley D.Newman教授做了题为Torsion Fibers at Low Temperature and Gravitational Inverse Square Law Tests的报告。报告结束后参观了引力中心山洞实验室。