View Single Post
Old 10-25-2012, 01:03 PM   #18
sureshs
Bionic Poster
 
Join Date: Oct 2005
Posts: 31,488
Default

Quote:
Originally Posted by LeeD View Post
We can agree about trying to hit thru 2.5 tennis balls, I think.
Yes, that is the number that comes from calculations too. I think it was rounded up to 3 which also nicely matched the number of balls in a can, and then continued to be used as visual aid. However, the can should be somewhat flexible, like a plastic tube, so that it can arrange itself on a gentle curve.
sureshs is offline   Reply With Quote