Hans C. Ohanian received his BS from the University of California, Berkeley, and his PhD from Princeton University, where he worked with John A. Wheeler. He has taught at Rensselaer Polytechnic Institute, the University of Vermont, and in summer courses at UNED in Spain. He has published several textbooks in addition to Gravity and Spacetime, including Classical Electrodynamics and Principles of Quantum Mechanics, as well as articles on various aspects of relativity and quantum theory. Remo Ruffini is the Chair of Theoretical Physics at the University of Rome, where he received his PhD, and has also taught at Princeton University. He is an editor of the International Journal of Modern Physics and has acted as an advisor to NASA and the Italian Space Agency. In addition to Gravitation and Spacetime, 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.
'A most welcome updated third edition of this splendid textbook on gravitation and spacetime, which provides an excellent introduction to the mathematical and physical foundations underlying our current understanding of the physics and astrophysics of neutron stars, black holes, and gamma ray bursts.' Riccardo Giacconi, Nobel Laureate and University Professor, Johns Hopkins University 'This is by far the best grad[uate] level text in gravitational physics. It starts by showing that the natural Lorentz invariant generalisation of Newton's scalar potential is a tensor, a perturbation of the usual Lorentz metric. The equivalence principle is then used to derive the full equations of GR. The last half of the book gives a beautiful treatment of black holes and the current model of Big Bang cosmology.' Roy P. Kerr, Professor Emeritus, University of Canterbury, Christchurch 'The third edition of this wonderful book combines even more perfectly than the previous editions the beauty of Einstein's General Relativity with the physics of stars, galaxies, and the cosmos. It manages to do this in only 500 pages in a pedagogical masterpiece that should be a must for any graduate student in theoretical physics.' Hagen Kleinert, Freie Universitat Berlin and ICRANet Review of the first edition: 'The best book on the market today of 500 pages or less on gravitation and general relativity.' John Wheeler, Princeton University 'I wish I had owned this book when I was trying to teach myself General Relativity for the first time.' The Observatory A most welcome updated third edition of this splendid textbook on gravitation and spacetime, which provides an excellent introduction to the mathematical and physical foundations underlying our current understanding of the physics and astrophysics of neutron stars, black holes, and gamma ray bursts. Riccardo Giacconi, Nobel Laureate and University Professor, Johns Hopkins University This is by far the best grad level text in gravitational physics. It starts by showing that the natural Lorentz invariant generalization of Newton's scalar potential is a tensor, a perturbation of the usual Lorentz metric. The equivalence principle is then used to derive the full equations of GR. The last half of the book gives a beautiful treatment of black holes and the current model of Big Bang cosmology. Roy P. Kerr, Prof. Emeritus, University of Canterbury, Christchurch, New Zealand The third edition of this wonderful book combines even more perfectly than the previous editions the beauty of Einstein's General Relativity with the physics of stars, galaxies, and the cosmos. It manages to do this in only 500 pages in a pedagogical masterpiece that should be a must for any graduate student in theoretical physics. Hagen Kleinert, Professor of Physics, Freie Universitat Berlin, Germany, and ICRANet Pescara, Italy, and Nice, France The best book on the market today of 500 pages or less on gravitation and general relativity. John Wheeler, Princeton University [commenting on the first edition] I wish I had owned this book when I was trying to teach myself General Relativity for the first time. The Observatory