convection-and-air

Updated: August 8, 2026

I was just working out a convection-and-air pump system for circulating hot air around the ball when Farnsworth came in. He had tucked carefully under his arm a sphere of about the size of a basketball and, if he had made it to my specifications, weighing thirty-five pounds. He had a worried frown on his forehead. "It looks good," I said. "What's the trouble?"

Walter S. Tevis - The Big Bounce