Lecture 3: Simultaneity and Causality 1. Synchronizing clocks 2. Why simultaneity is relative 3. Revisit length contraction and time dilation 4. The invariant interval 5. Causality Share this:FacebookTwitterGooglePinterestLinkedInEmailTumblrPrint Leave a Comment Click here to cancel reply. Name * Email (will not be published) * Website Comment Notify me of follow-up comments by email. Notify me of new posts by email.