Search results
To date, our best theory of gravity is the general theory of relativity, which was put forward in 1916 by Albert Einstein. General relativity was one of the major intellectual achievements of the twentieth century; if it were music, we would compare it to the great symphonies of Beethoven or Mahler.
May 3, 2016 · After the general implications of general relativity for cosmology (e.g., the description of cosmic dynamics in terms of a dynamical space-time metric) had been established, the cosmological debate was separate enough from the full theory of general relativity to open a field of discussion in which these implications could be modified and ...
The difference with general relativity is that, in the general situation, there is a coupling between the degrees of freedom of any reference body (thus any observer) and gravity, so one cannot neglect the effects of dynamics on the observer, which means that the dynamics of matter and force fields affect on length, time and causal structure.
A Revolution in Perspective. In 1905, Albert Einstein published his theory of special relativity. This theory is discussed in great detail in Relativity, so we say only a few words here. In this theory, no motion can exceed the speed of light—it is the speed limit of the Universe. This simple fact has been verified in countless experiments.
This was only partly correct. It is true that the relativity theories employ the highest branches of mathematics. But today thousands of scientists understand the theories, and anyone can get a good idea of relativity by thinking the matter through. Einstein’s thinking grew out of a number of scientific puzzles, especially about light.
Before this can be understood, we must briefly visit some notational staples of general relativity. In Part I we introduce the major themes and notation necessary to understand Parts II and III. In Part II we explore the form of the EFE in 1+1 dimensions and analyze the implications of this pure 1+1 general relativity.
For 100 years, the general theory of relativity has been a pillar of modern physics. The basic idea is so elegant that you don’t need superpowers to understand it. Begin with Isaac Newton’s first law of motion: An object remains in uniform motion unless acted on by a force.
