New posts in Spacetime

Twins Paradox: Why is one frame considered to be the accelerating frame

What is intrinsic curvature?

How exactly are Lorentz transformations rotations?

Can we describe all forces as a curvature in space-time?

Space-time curvature caused by electromagnetic fields - an experimental results

We know there is no aether, so what is being dragged in frame dragging?

If spacetime itself is expanding, how could we ever tell?

Physical Motivation for Four-Velocity definition

How can extra dimensions be small?

Is a geodesic in the 4d spacetime still a geodesic after projection onto the 3d space?