Ceperley, Peter2011-05-272011-05-272011-05-27https://hdl.handle.net/1920/6385This animation requires Adobe Flash.This animation shows how the speed of an object depends on the reference frame of the observer. This is a key concept in Einstein's theory of special relativity.enPhysicsTechnical animationSpecial relativityReference framesrelative motion - frames of referenceAnimation