Quote:
Originally Posted by north
the light does not " appear to be bend " light does bend
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Well it is more correctly put that light follows the geodesics (the shape) of space because light is a mass-less energy. It is incapable of determining the vector it will travel because that is decided by the direction of emission from the light source and as such light must follow the curvature of space.
Light may be absorbed and re-emitted which would lead to scattering which is the equivalent of 'light noise' or general light wash when looking at an individual image. It may have the speed determined by the medium in which it is travelling and that is why it is measured as light speed in a vacuum. In a diamond light travels at about 40% the speed of light because of the effect of the material in a diamond.
Just a small point which is why tensor equations are used to calculate curvature but the curvature is not of the light.