haunyack;214845 Wrote: > Dimples on a golf ball are symmetrical, therefore the effect of air > pressure is predictable. > > If one could predict the effects of random occurrence (grime on a car > finish, for example), that person could play the lotto and win every > time. > Random occurrence is the angst of statistical analysis. >
It's not about prediction - despite the symmetry, even golf ball dimples are designed mostly by trial and error. It may be counterintutive, but Tyler is right. Rough surfaces create a layer of turbulent air around the object, and that often lowers the overall drag force. -- opaqueice ------------------------------------------------------------------------ opaqueice's Profile: http://forums.slimdevices.com/member.php?userid=4234 View this thread: http://forums.slimdevices.com/showthread.php?t=36854 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
