11 dimensions can describe supergravity and M-theory, and 10 dimensions are used to describe superstring theory.
A cube, a tesseract, and the old habit of pretending lower dimensions are enough
From left to right: a square, a cube and a tesseract. The square is two-dimensional (2D) and bounded by one-dimensional line segments; the cube is three-dimensional (3D) and bounded by two-dimensional squares; the tesseract is four-dimensional (4D) and bounded by three-dimensional cubes. In a two-dimensional picture, these are the first four spatial dimensions lined up like a visual dare.
Gobble's Take: Reality keeps getting more spacious the moment you stop insisting it fit on the page.
Source: Perplexity Search
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