Geometrodynamics
Geometrodynamics is a now abandoned domain of theoretical physics. Important during the 1960s, its aim was to provide theoretical basis for an ontological reduction of all of physical phenomena - such as gravitation, electromagnetism and later even quantum mechanics - to the geometrical properties of a (curved) space-time. As such, it is a prolongation of Albert Einstein's project of a unified field theory.
Aiming at a systematic identification of matter with space, geometrodynamics has often been said to be an extension of the philosophy of nature as conceived by Descartes and Spinoza. The geometrodynamics program, however, failed to explain some important physical phenomena, such as the existence of fermions or that of gravitational singularities.
John Archibald Wheeler, the initiator of the program, abandoned it in the early 1970s.
References
Butterfield, Jeremey (1999). The Arguments of Time. Oxford: Oxford University Press. ISBN 0-197-26207-4.
Ciufolini, Ignazio & Wheeler, John Archibald (1995). Gravitation and Inertia. Princeton: Princeton University Press. ISBN 0-691-03323-4.
Prastaro, Augustino (1985). Geometrodynamics: Proceedings, 1985. Philadelphia: World Scientific. ISBN 9-971-97863-6.
Misner, Charles W; Thorne, Kip S. & Wheeler, John Archibald (1973). Gravitation. San Francisco: W. H. Freeman. ISBN 0-7167-0334-0.
Wheeler, John Archibald (1963). Geometrodynamics. New York: Academic Press. LLCN 62013645.