From YouTube, produced by The Tabletop Explainer
This animation takes a simple look at the complex topic of Special Relativity. The two postulates examined in the video are: 1) All uniform motion is relative, and 2) The speed of light (in a vacuum) is the same for all observers. This simple and clear introduction to Einstein's Special Relativity, should help a learner better understand this revolutionary scientific discovery and idea. Run time 07:12.