Oyvind G Gron
Oslo and Akershus University
Norway
Title: How to talk about Einstein’s general theory of relativity?
Biography
Biography: Oyvind G Gron
Abstract
I will here review the main conceptual contents of the theory of relativity in a non-mathematical way as far as possible. We start by the principle of equivalence and then go on to discuss the possibility of extending the principle of relativity to accelerated and particularly rotating motion. The significance of the phenomenon of inertial dragging in this connection is pointed out. Then we discuss whether there is any connection between experiencing acceleration of gravity and the curvature of space time. The next topic is how to obtain a proper understanding of the strange property of a classical black hole that nothing can come out of it. We point out the significance of the so called “river of space” in this connection. Finally we discuss the phenomenon of repulsive gravitation and the difference between Einstein’s interpretation of the cosmological constant and it modern interpretation.
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