Astronomy   View all facts   Glossary   Help

abstraction > hypothesis > theory > unified theory > Kaluza-Klein theory

Kaluza-Klein theory comparison table

Subject	is a kind of	has definition
unified theory	theory	Any theory that describes all four forces and all of matter within a single, all-encompassing framework.
Kaluza-Klein theory	unified theory	An early attempt to unify general relativity and electromagnetism by working in five dimensions. The electromagnetic field was obtained by curling up or compactifying the extra dimension. With the advent of higher dimensional theories such as superstrings, the Kaluza-Klein approach came back into fashion.

Next unified theory: quantum gravity    Up: unified theory    Previous unified theory: grand unified theory