I have heard that the universe can be explained in terms of the four fundamental forces. I have also heard it can be explained in terms such as space, time, energy, mass or even motion. To further complicate things, I've been told that charge can be considered a fundamental aspect of our universe.
I'm not looking for a unified theory, but I would like to know what has been empirically observed and used as as a fundamental 'dimension' of the physical universe. Are there any more other than the 10 listed above?
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