Summary: David G. Alciatore, PhD ("Dr. Dave") ILLUSTRATED PRINCIPLES
"Throw Part IX: spin transfer follow-up"
Note: Supporting narrated video (NV) demonstrations, high-speed video (HSV) clips, and
technical proofs (TP) can be accessed and viewed online at billiards.colostate.edu. The
reference numbers used in the article help you locate the resources on the website. If you
have a slow or inconvenient Internet connection, you might want to view the resources
from a CD-ROM. See the website for details.
This is the ninth article in my series dealing with "throw" effects. I hope that you're not
thinking: "Enough, already!" I promise that I'm almost done with throw, and soon I'll move on to
other topics. Please bear with me a little longer. So far, I've looked at basic terminology,
examples of where throw can help you or hurt you in game situations, the effects of cut angle and
speed, the effects of follow and draw, spin-induced throw, the difference between inside and
outside English, the combination of spin- and collision-induced throw effects, and spin transfer. If
you want to refer back to any of my past articles, they are all available on my website
(billiards.colostate.edu). To refresh your memory, throw is change in the object ball direction
due to sideways forces between the cue ball (CB) and object ball (OB) during impact. NV 4.15,
4.16, 7.5, and 7.6 show examples of both collision-induced throw (CIT) and spin-induced
throw (SIT). See the video demos and previous articles for more information.
NV 4.15 Using throw to make a partially blocked shot