Summary: David G. Alciatore, PhD ("Dr. Dave") ILLUSTRATED PRINCIPLES
"Throw Part VIII: spin transfer"
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 eighth 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, and the combination of spin- and collision-induced throw effects. All of my past
articles are available on my website (billiards.colostate.edu) if you want to refer back to them.
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 the previous articles for more information.
NV 4.15 Using throw to make a partially blocked shot