Darren L. Williams, Ph.D., is a Professor in the Chemistry Department at Sam Houston State University, Huntsville, TX, USA. He has taught quantum mechanics and spectroscopy courses for almost two decades, is the author of two book chapters and over 25 papers in peer-reviewed journals, and holds two patents on measuring sessile drop contact angles.

Victoria S. Jackson, M.S., is a Professor in the Chemistry Department at Lonestar College University Park, Houston, TX, USA, where she teaches Introductory and General Chemistry courses. Her contributions to this manuscript stemmed from her 2015 master's thesis at Sam Houston State University.