Who saw these bearings online?

September 21, 2009 2:41 PM

Unusually shaped bearings of uniform height, who saw these online last week and can direct me back to them?

There was a video last week of a book rolling around on top of 3-4 bearings that were not perfectly round yet due to the particular shape of the bearing the height of the book never changed, anyone?

posted by Cosine to Computers & Internet (3 answers total)

I haven't seen the bearings, but it sounds like the bearings were surfaces of constant width---see Reuleaux triangle for a starting place.
posted by leahwrenn at 3:03 PM on September 21, 2009

Best answer: Are you thinking of the videos from How Round is Your Circle? It was mentioned in the comments of the drilling a square hole post a few weeks ago.
posted by Rhomboid at 3:45 PM on September 21, 2009

Response by poster: Well done, thanks all.
posted by Cosine at 3:46 PM on September 21, 2009