Born to Michael and Kathryn Hercules in Somerset, Pennsylvania.
Earns a Bachelor of Science degree in chemistry from Juniata College.
Earns a Doctor of Philosophy degree in analytical chemistry from the Massachusetts Institute of Technology.
Teaches as an assistant professor at Lehigh University.
Teaches as an associate professor at Juniata College.
Teaches as an assistant professor at Massachusetts Institute of Technology; 1968 associate professor.
Teaches as an associate professor at the University of Georgia; 1974 professor.
Becomes a John Simon Guggenheim Memorial Fellow.
Teaches as a professor in the department of chemistry at the University of Pittsburgh.
Serves as chairman of the chemistry department at the University of Pittsburgh.
Is an Alexander von Humboldt Preisträger (Prize winner) (Germany).
Receives the Benedetti-Pichler Award from the American Microchemistry Society.
Receives the Achievement in Analytical Chemistry Award from the Eastern Analytical Symposium.
Receives the American Chemical Society National Award in Analytical Chemistry (Fisher Award).
Receives the Eastern Analytical Symposium Award in Analytical Chemistry.
Teaches as a Miles Professor at the University of Pittsburgh.
Receives the American Chemical Society National Award in Surface Chemistry (Adamson Award).
Becomes the department chairman and Centennial Professor at Vanderbilt University.
Receives the Spectroscopy Society of Pittsburgh Award.
Is named a Centennial Professor Emeritus and Research Professor at Vanderbilt University.