The Interaction of Gravitation and electromagnetism

The interaction of gravitation and electromagnetism in Evans field theory is governed by the first Bianchi identity of differential geometry. The Christoffel symbol of the unified field is in general asymmetric in its lower two indices. The Einstein field theory of gravitation is recovered when the Christoffel symbol becomes symmetric and the torsion tensor vanishes. The Maxwell Heaviside field theory of electromagnetism is recovered when the Christoffel symbol becomes antisymmetric. The theory of O(3) electrodynamics is recovered when the Christoffel symbol is an-tisymmetric and when the tangent bundle index is developed in a complex circular basis. The Evans unified field is described in general by an asymmetric Christoffel symbol. In this case gravitation and electromagnetism are mutually influential. The details of this interaction are found by solving the first Bianchi identity of differential geometry, which is the homogeneous Evans field equation within a C negative scalar. These details are important for the design of major new technologies which take electromagnetic energy from Evans spacetime defined by the asymmetric Christoffel symbol, and for the design of new counter-gravitational aerospace devices