pic: IRI winner's trophy

[Karthik]

Originally Posted by Andy Baker

After ignoring much of the silliness of what was posted above, we just took a picture of the ball without the blue glass pieces.

The inside structure is made from 2 polycarbonate hemispheres, each 1/16" thick.

Andy B.

(edit... on second thought, I could post something similar to Karthik's convoluted solution and said that we used some 7-axis CNC welding process to do this. But, I didn't. )

Sorry for injecting some interesting math (well, at least interesting to me) in to the discussion. In the future I'll restrict my posts to drivel like "OMG. That's sooooo cool!"

Anyways, here's a picture I found on the web that illustrates what I was talking about with the dual. (Found on a combinatorial geometry course website at Merrimack College)



Clearly too complicated to fabricate, but still pretty cool. (Or just general ignorable silliness. )