In physics, Kaluza–Klein theory (KK theory) is an attempt at creating a unified field theory of gravitation and electromagnetism based on the idea of a fifth dimension of space beyond the conventional four-dimensional spacetime of general relativity. According to this proposal, there are three dimensions of space and one of time but with an additional spatial dimension in the shape of a tiny circle.
In physics, Kaluza–Klein theory (KK theory) is an attempt at creating a unified field theory of gravitation and electromagnetism based on the idea of a fifth dimension of space beyond the conventional four-dimensional spacetime of general relativity. According to this proposal, there are three dimensions of space and one of time but with an additional spatial dimension in the shape of a tiny circle.
Source: Wikipedia "Kaluza–Klein theory" · CC BY-SA 4.0
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