NOTE on frozen balls —
from Rec.Sport.Billiard (RSB)
Frozen Cue-ball to Object-ball
Article: 117703 of rec.sport.billiard
From: Ron Shepard
Newsgroups: rec.sport.billiard
Subject: Re: House Rules
Organization: little, if any
Lines: 26
Date: Wed, 07 May 2003 14:03:20 GMT
In article <20030507083902.08411.00001094@mb-m04.aol.com>,
ninebal310@aol.com (Ninebal310) wrote:
For example: If the cue ball is in contact with the object ball, it has
been proven that the there will be a "double hit" if the cueball is not struck
at at least a 45 degree angle.
It is not clear if you are asking a question about this situation or
if you are making a statement. If it is the latter, then your
statement is not right.
When the balls are frozen, there is no double hit at any angle, 45
degrees, 30 degrees, 0 degrees, 89 degrees, whatever. For a
normal stroke, there is a single tip-ball contact, that contact time
is very short (about 0.001 seconds) the same as any other legal
tip-ball contact, both the cue ball and the object ball are
accelerated by that tip-ball contact, and that simultaneous
acceleration occurs at any cut angle and any stick elevation angle.
This behavior was predicted long ago based on the physics of the
collision and the physical characteristics of the balls, stick, and
tip, and it was proven empirically with the high speed video from the
Jacksonville Project and with
other experiments (e.g. the capacitor experiments described
in Marlow's 1995 book). In this case, the
predictions were in perfect agreement with reality.
$.02 -Ron Shepard
Here is some information on
the
Jacksonville Project.