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Dimension

Dimensions not only concern directly observable matters.

 


Geometrie

In geometry the various dimensions arise by analogies.

Point zero-dimensional
Line one-dimensional
Plane two-dimensional
Body three-dimensional

 


Numbers

A number can have multiple dimensions.

Real number one dimension
Complex number two dimensions
Quarternion four dimensions
Octonion eight dimensions

 


Space

The dimension of a space is defined as the minimum number of coordinates needed to specify any point within it.

 


Spacetime

Spacetime describes the four dimensions of the universe in one model.

 


Fractals

A fractal is every set with a non-integer dimension.

 


Constants

The fine-structure constant is dimensionless and has the same value in all unit systems.

 


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