Earlier versions of the theory were called "
O(3) electrodynamics". Evans claims that he is able to derive a generally covariant field equation for electromagnetism and gravity, similar to that derived by
Mendel Sachs. Evans argues that Einstein's theory of
general relativity does not take into account
torsion, which is included in the
Einstein–Cartan theory. In 1998 Evans founded the Alpha Institute for Advanced Studies (AIAS) to keep developing his theory. Its website collects papers on the theory and recent developments. The theory has been used to justify the
motionless electromagnetic generator, a
perpetual motion machine. In July 2017, Evans claimed (on his blog): "There is immediate international interest in [papers] UFT382 and UFT383, describing the new energy from spacetime (ES) circuits. There is also great interest in UFT364, the paper that describes the circuit [...] These circuits should be [...] developed into power stations." In November 2017, Evans expanded on this point as follows (again on his blog): "There is no reasonable doubt that the vacuum (or aether or spacetime) contains a source of inexhaustible, safe and clean energy. This source can be used in patented and replicated circuits such as those of [Evans's self-published papers] UFT311, UFT364, UFT382, and UFT383." ==Reception==