Summary: David G. Alciatore, PhD ("Dr. Dave") ILLUSTRATED PRINCIPLES
"Throw Part VII: CIT/SIT combo"
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 seventh article in my series dealing with "throw" effects. 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, and the
difference between inside and outside English. 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
NV 4.16 Over-cutting a cut shot to compensate for throw
NV 7.5 Frozen ball throw