MathematicsPi Day: How to calculate pi using a cardboard tube and a load of ballsThis Pi Day, try calculating everyone’s favourite mathematical constant using balls and a cardboard tube, thanks to a mathematical trick involving the balls’ massesNews
PhysicsGrand unified game theory can represent all two-player games Game theory helps calculate the probabilities of an outcome in adversarial situations, and we use several games as models – but now there’s one that can cover many situations News