The Evolution of General Relativity

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A neutron star with the mass of the earth would be the size of Los Angeles or something like that. Black holes a centimeter across. That's a lot of mass in a very tiny area. And what is the Schwarzschild radius for the earth? I feel like it's some small number. But you see, I know Wheeler was very worried about this. He said, what happens? Do you get this singularity or does it switch around and come out again? And it was, it was a big question. Should you trust the Oppenheimer model, Oppenheimer's nyme model or is that unrealistic because of irregularities?

Sir Roger Penrose has had a remarkable life. He has contributed an enormous amount to our understanding of general relativity, perhaps more than anyone since Einstein himself -- Penrose diagrams, singularity theorems, the Penrose process, cosmic censorship, and the list goes on. He has made important contributions to mathematics, including such fun ideas as the Penrose triangle and aperiodic tilings. He has also made bold conjectures in the notoriously contentious areas of quantum mechanics and the study of consciousness. In his spare time he's managed to become an extremely successful author, writing such books as The Emperor's New Mind and The Road to Reality. With far too much that we could have talked about, we decided to concentrate in this discussion on spacetime, black holes, and cosmology, but we made sure to reserve some time to dig into quantum mechanics and the brain by the end. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.