Relativity: beyond the speed of light

Luis A . Muñoz Torres|

Here a while back I was talking with a colleague who is taking a physics course on relativity. Really struck me about many concepts of how matter in the aspect of movement and travel in the Earth versus that of outer space. Someday a human being can travel at high speed as light? What would happen if we achieve? Come to be so fast that we could visit other universes? The are many questions each person, scientific and engineering is done in this field of physics. Relativity is the gravitational attraction between masses observed is due to a curvature of space-time and therefore reflects the geometry of the forces rather than distance as is sometimes thought. In search of an answer the scientist Albert Einstein and relativity that as no information can travel faster than light, and therefore there can be no causal link between two events joined by a spatial interval. However, one of the cornerstones of the theory of Newtonian gravity, the principle of action at a distance, is that changes in the gravitational field produced will be transmitted instantaneously through space. The contradiction between the two theories is obvious, since assuming Newton's thesis would imply the possibility that an observer would be affected by the gravitational perturbations produced outside the cone of light. So the theory must be met in the physical laws must be enforced in all axes, the free inertial motion of a particle in a gravitational field is carried through geodesic paths, and that the principle of equivalence, the laws of special relativity apply locally for all inertial observers (which people can watch from any angle so that the Commission observed. The main principle that would make certain the principle of equivalence between an object and the observer says it is supposed that a system is in free fall and one that moves in a region of space-time without gravity are in a substantially similar physical state: in both cases the inertial systems. According to classical mechanics distinguish between bodies of inertial motion (at rest or moving at constant speed) or non-inertial motion bodies (those undergoing accelerated motion). Under Newton's second law, any acceleration was caused by the application of an external force. The relationship between force and acceleration are expressed by this formula:

m = F/a

But it is thought that gravitational effects are not created by any force, they find their cause in the curvature of space-time caused by the presence of matter. This shows that the transmitted light from distant objects never travels in a straight line but travel in a curve because of space-time that occurs in the vacuum of space outside the universe where light travels .