This example is taken from the book .
particles :: physics simulation
Animation Toolworks' Library - 12 Principles
maninthedark.com by Miltos Manetas and Aaron Russ Clinger...
maninthedark.com by Miltos Manetas and Aaron Russ Clinger, 2004.
INDUSTORIOUS CLOCK ||| MONO*CRAFTS3.0
Blue Ball Machine (fixed)
The original domain had been deleted, so I decided to create a new YTMND with the old domain.