Ceperley, Peter2011-07-102011-07-102011-07-10https://hdl.handle.net/1920/6568This animation requires Adobe Flash.This animation illustrates a thought experiment in the derivation of transforms for special relativity. This particular animation shows that length perpendicular to the direction of motion will not be changed by change of reference frame and that simultaneity is not an issue.enPhysicsSpecial relativityLength invarianceLorentz transformTechnical animationGedunken experimentAnimation