Gravitation and Spacetime (Second Edition)
Hans C. Ohanian received his  B.S. from the                  University of    California,                         Berkeley,                   and his Ph.D. from                                  Princeton  University, where he worked with                                 John A. Wheeler.  He                    has taught at        Rensselaer    Polytechnic   Institute, Union College, and the                                    University of  Vermont. He is                    the author of   several textbooks spanning all                undergraduate  levels:  Physics, Principles of Physics,                Relativity: A Modern Introduction, Modern           Physics,  Principles of                     Quantum                 Mechanics,                                       Classical  Electrodynamics, and, with  Remo                                  Ruffini,                  Gravitation and                                 Spacetime.  He                  is also the                author of dozens of articles                dealing    with                       gravitation,  relativity, and quantum            theory,                including many                   articles                   on  fundamental                        physics   published in the American Journal of  Physics,               where he served as  associate                      editor for some                                  years. He                                 lives in Vermont.Remo Ruffini is the Chair of Theoretical Physics at the University of Rome, where he received his Ph. D., and has also taught at Princeton University. He is an editor of the International Journal of Modern Physics and has acted as an adviser to NASA and the Italian Space Agency. In addition to Gravitation and Spacetime, a partial listing of his published works include Cosmology from Space Platforms, Black Holes, Gravitational Waves and Cosmology, Basic Concepts in Relativistic Astrophysics, Gamow Cosmology, and various articles and edited volumes.