Yizhak Marcus, PhD, is Professor Emeritus at the Hebrew University in Jerusalem. He was a researcher at the Soreq Nuclear Research Center, from where he was appointed in 1965 as Professor of Inorganic and Analytical Chemistry at the Hebrew University until his retirement in 1999. His main interest is the chemistry of liquids and solutions: aqueous, non-aqueous, and mixed solvents, solutions of electrolytes and non-electrolytes. He has published eight books and over 300 papers in refereed journals as well as roughly 30 contributions in multi-author books.