- #36
cianfa72
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ok so, technically, we get the set of 'events spacelike separated from event A in spatial ##x## direction in a neighborhood of A' by means of the exponential map of those spacelike vectors lying in that 2-plane (the 2-plane that each gyroscope's spatial axis in the class pointing in ##x## spatial direction picks/selects in the 4D tangent space at event A).PeterDonis said:The points in the diagram, since it's strictly speaking a diagram of the tangent space, represent vectors, not events; the vector represented by a given point is, heuristically, the arrow from the origin to that point, which gives a magnitude and a direction.
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