Question

Consider the following diagram, set in Minkowski spacetime. The outside vertical lines represent the worldlines of two objects on the train platform, and central vertical line is an observer standing on the platform. The three sloped lines are the worldlines of the back of the train, a passenger riding in middle of the train, and the front of the train. The short lines with slopes 1 and -1 are trajectories of light rays emitted from the two objects on the platform. If we apply a Lorentz transformation to this diagram, to yield a new diagram associated with the inertial frame in which the train and its passenger are at rest, which diagram do we get?

          Consider the following diagram, set in Minkowski spacetime. The outside vertical lines represent the worldlines of two objects on the train platform, and central vertical line is an observer standing on the platform. The three sloped lines are the worldlines of the back of the train, a passenger riding in middle of the train, and the front of the train. The short lines with slopes 1 and -1 are trajectories of light rays emitted from the two objects on the platform.
If we apply a Lorentz transformation to this diagram, to yield a new diagram associated with the inertial frame in which the train and its passenger are at rest, which diagram do we get?

Consider the following diagram, set in Minkowski spacetime. The outside vertical lines represent the worldlines of two objects on the train platform, and central vertical line is an observer standing on the platform. The three sloped lines are the worldlines of the back of the train, a passenger riding in middle of the train, and the front of the train. The short lines with slopes 1 and -1 are trajectories of light rays emitted from the two objects on the platform.
If we apply a Lorentz transformation to this diagram, to yield a new diagram associated with the inertial frame in which the train and its passenger are at rest, which diagram do we get?

Added by Lucas M.

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