Thought Experiment on a tube with length of 1 light year the twist on the tube cannot travel at this speed. To rotate this tube, a force is applied at some point on the tube, if it is applied at the end where the laser is mounted, the opposite end of the tube will complete 1 rotation after 1 year ! Reply
the twist on the tube cannot travel at this speed. To rotate this tube, a force is applied at some point on the tube, if it is applied at the end where the laser is mounted, the opposite end of the tube will complete 1 rotation after 1 year !