Enough Spin Transfer To Cause Object Ball To Curve? Watch Video and You Decide.

sde said:
I thought I understood cushion induced spin but perhaps I don't. Sorry for not using the correct terms here but how does the 4 ball go into the side rail at ~50 degrees and leave at ~80 degrees, if it didn't already have the side spin or what in effect would be draw. Is it possible that the cushion was compressed and that is causing the ~80 degree exit angle?
Click to expand...
I don't think the rebound angle is changing that much (~30 degrees), but you would expect it to go short at such a fast speed (and with stun, which it has). The 4-ball might also pick up a little clockwise cut-induced spin (CIS) off the 6-ball. Regardless, the 4-ball picks up significant counterclockwise spin off the first rail (see HSV A.31 for a good super-slow-motion illustration of this effect). It is difficult to tell which way the 4-ball is spinning in your video due to the frame rate (strobe effect) of the camera. However, it is clear that when the 4-ball touches the last rail it has reverse (counterclockwise) spin.

I hope that helps,
Dave
 
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12310bch said:
Wow! How fascinating is that??? Non-linear Chaos Reigns!!

It's obvious from stopping the video and trying to trace back what happened
( I couldn't) the 4B is the most blurred ball on the table before hitting the 8B.
If I assume that is because it is moving the fastest, where the hell did all
that energy on that single ball come from?

Great video. Cost me abut 45 minutes time out of my life, but worth it.
Click to expand...

I believe you are correct that the 4 is the fastest moving ball on the table and that is why it is the most blurred. The problem is that the video was recorded at only 30 fps and if a ball travels too far during a frame it will be blurred.

I way I edited the video, breaking it up into small parts, may not have been the best way to show it. I'm considering posting another version that plays straight through. Possibly part of it in reverse slow motion. I have about 8 hours of work, over three days, into this right now. What is a couple more hours? :D
 
dr_dave said:
I don't think the rebound angle is changing that much (~30 degrees), but you would expect it to go short at such a fast speed (and with stun, which it has). The 4-ball might also pick up a little clockwise cut-induced spin (CIS) off the 6-ball. Regardless, the 4-ball picks up significant counterclockwise spin off the first rail (see HSV A.31 for a good super-slow-motion illustration of this effect). It is difficult to tell which way the 4-ball is spinning in your video due to the frame rate (strobe effect) of the camera. However, it is clear that when the 4-ball touches the last rail it has reverse (counterclockwise) spin.

I hope that helps,
Dave
Click to expand...

Yes that does help, thank you.

Perhaps the next time you have a high speed camera you can try to capture this.

Steve
 
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