William Karstens is a professor of physics at Saint Michael's College in Colchester, Vermont, where he has also served as department Chair. He received his B.S. and Ph.D. from the University of Vermont and his Masters degree from Brandeis University. His research is in condensed matter physics, with a focus on optical properties of solids. William has been the SPS Chapter Advisor since the college first gained recognition in 2014. He is also the Secretary and Past President of the Vermont Chapter of Sigma Xi, the Scientific Research Society.