Stacking positive and negative cannonballs
John
Imagine you are a soldier in charge of stacking cannonballs. Your fort has a new commander, a man with OCD who wants the cannonballs stacked in a very particular way. The new commander wants the balls stacked in tetrahedra. The balls on the bottom of the stack are arranged into a triangle. Then the next […] The post Stacking positive and negative cannonballs first appeared on John D. Cook .