Episode Synopsis "Round Trip"

An interesting query by Bob High, posed in the May-June 1994 issue of MIT Technology Review: Suppose a billiard ball with a small black dot precisely on its top is rolled around the full circumference of a circle of the same radius. Assuming no slippage or twisting, where is the dot when the ball returns to its starting point?

Listen "Round Trip"

More episodes of the podcast Futility Closet

• The Constitution State
• A Poem
• Wittenbauer’s Parallelogram
• Unquote
• Inventory
• Product Packaging
• Procedure
• Round Trip
• “A Pastoral”
• Position