http://i.imgur.com/f1d6O1s.jpg
Russian billiard
30.000 frames per second
T=0ms Beginning of contact between tip and cue ball
T=0.35-0.4ms Maximum deformation tip, movement of cue ball <0.02mm, angle of cue ball rotation <0.01deg
T=1.4-1.5ms Completion of contact between tip and cue ball
sorry...