Summary
Today, the physicists' grail is more than ever the theory that will unify General Relativity and Quantum Mechanics, the infinitely large and the infinitely small, so these scientists construct new theories.
The most publicised of these is “string” theory, which implies a ten or eleven-dimensional Universe! Apart from the three dimensions of space that we know, the other dimensions could be microscopic and rolled up, totally beyond our perception.
In another approach, physicists are trying to look beyond the standard description of the geometry of the Universe… For the moment, these theories are essentially based on mathematical concepts and have not yet been confirmed by experimentation.
The most publicised of these is “string” theory, which implies a ten or eleven-dimensional Universe! Apart from the three dimensions of space that we know, the other dimensions could be microscopic and rolled up, totally beyond our perception.
In another approach, physicists are trying to look beyond the standard description of the geometry of the Universe… For the moment, these theories are essentially based on mathematical concepts and have not yet been confirmed by experimentation.
