posted on Sep, 26 2010 @ 07:40 PM
reply to post by tarifa37
As information is concerned.
Now phase velocity or group phase velocity can be instantaneous. This is what entanglement is.
Example 1.) Shear Wave: A shear wave can be thought of as an angle traveling along two nearly parallel "rays", a convenient fiction. As the angle
decreases when the rays are brought into the parallel, or coherence, the speed of its travel increases. Like an infinitely long scissor.
Example 2.) Wave Bubble: Think of it as two concentric circles almost the same size. Almost looks like one circle. Now move one off center so that one
point is exactly on top of the other. The two circles are now separated at every point but that one That is the point they are in phase. Move it again
slightly and it is in phase at another point. But the speed at which that point "traveled" is for all intents and purposes instantaneous.
Now think of those circles as two spheres. Those are the wavefronts of a photon. And they are growing at the speed of light. Where we see a photon is
where the two spheres are in phase. So by shifting the in-phase portion to another point I can make the photon appear as if it jumped to a new area on
the sphere instantaneously.
Example 3.) Tangental Velocity: As a source of light rotates, the speed of our ray measured at the right angle of the direction of propogation exceeds
the speed of light at a given distance. Pulsars have these rays, the tangental velocities of which are exceeding the speed of light by tens if not
hundreds of magnitudes.