How to make railway timetables (with graphs) - Numberphile youtube.com mathematics via river 1 year, 4 months ago | archived | plain text cache (formatted)| source | 1 comment
I found the 3d model renders really impressive :D
My favorite Numberphile video is the one about the intermediate value theorem and wobbly (i.e. uneven) tables: Numberphile - "Fix a Wobbly Table (with Math)"