Lecture 4: Adding Velocities 1. How we usually add velocities 2. Relativistic addition of velocities 3. The usual Doppler shift 4. Relativistic Doppler shift 5. Problems 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 Name * Email (will not be published) * Website Comment Notify me of follow-up comments by email.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.