A new TWU experiment is now up. It investigates spin and rebound angle from spaghetti-type patterns, Wilson Steam 16x15, PowerAngle 16x16 diagonal, and standard 16x19.
It comes in two parts:
1. The experiment writeup: Spin and String Patterns Old, New, and Illegal: Spaghetti, Diagonal, Open and Closed Patterns
2. A companion database and image gallery: Spin Database and Impact Image Gallery
Lot of fun stuff like these:
And, of course, lots of information, data, graphs, photos, illustrations, analysis, etc.