extra dimension

According to some of the candidate models for a theory of quantum gravity, notably in string theory, our world should have extra dimensions – space dimensions in addition to the three we know from everday life.

More information about extra dimensions, possibilities of observing their effects and their use for building physical models can be found in our section Spotlights on relativity, namely Extra dimensions and how to hide them, The hunt for extra dimensions and Simplicity in higher dimensions.