Energy12 Posted January 17, 2022 Report Share Posted January 17, 2022 Object A is moving, to the right, really fast towards object B on the x axis. At (0,0) they meet. There are two rocks next to each other ahead of the speeding object A. The two rocks are shown as world lines red and green as they would exist for each observer. Assume that the length contraction is 1/2 for object A. Is this graph correct? Quote Link to comment Share on other sites More sharing options...
Vmedvil2 Posted January 18, 2022 Report Share Posted January 18, 2022 3 hours ago, Energy12 said: Object A is moving, to the right, really fast towards object B on the x axis. At (0,0) they meet. There are two rocks next to each other ahead of the speeding object A. The two rocks are shown as world lines red and green as they would exist for each observer. Assume that the length contraction is 1/2 for object A. Is this graph correct? That graph isn't even close to correct for general relativity. Quote Link to comment Share on other sites More sharing options...
OceanBreeze Posted January 18, 2022 Report Share Posted January 18, 2022 (edited) 6 hours ago, Energy12 said: Object A is moving, to the right, really fast towards object B on the x axis. At (0,0) they meet. There are two rocks next to each other ahead of the speeding object A. The two rocks are shown as world lines red and green as they would exist for each observer. Assume that the length contraction is 1/2 for object A. Is this graph correct? Because of the introduction of gravity into general relativity, objects move along geodesics and their world lines are usually curved, not straight lines unless the particles are in flat space, far from any gravitational influence. The spacetime graph does not need to be as complicated as the one posted by VM. Edited January 18, 2022 by OceanBreeze Quote Link to comment Share on other sites More sharing options...
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