interactions is shown even in the case when the formal mathematical connection between them is lost. The problem is solved in physical space, bypas-sing the curved special theory of relativity, as is still done in practice. The magnetic action is interpreted as the effect of motion in the electric. The nature of the electric field is discussed in two forms: the Coulomb field adapted to motion and radiation. The interaction of a light wave with the gravity of the Sun is simulated. The nature of such an interaction is revealed, which leads to the instability of the speed of light c in a vacuum.
Theoretical results are supported by integration of differential equations of mechanical state.