caption: the time distance t diagram
exif: {"Image DocumentName": "The Time-Distance (t-x) Diagram", "Image ImageDescription": "Think about: What would a fast velocity look like on this plot? Why is direct ray a straight line? Why must the direct ray plot start at the origin (0,0)? Why is refracted ray straight line? Why does refracted ray not start at origin? Why does reflected ray start at origin? Why is reflected ray asymptotic with direct ray? Understanding The t-x Diagram is Key!!!", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}