George Peter Nissen (1914–2010) was an American gymnast and inventor who developed the modern trampoline and made trampolining a worldwide sport and recreation.
George Nissen and other players demonstrating Spaceball in Paris in 1965
A trampoline is a device consisting of a piece of taut, strong fabric stretched between a steel frame often using many coiled springs. People bounce on trampolines for recreational and competitive purposes.
A youth bouncing on a trampoline
Inuit blanket toss in Wainwright, Alaska (1922-1923) during Amundsen's Maud Expedition
Iñupiat blanket toss during the Nalukataq festival in Utqiagvik, Alaska (2006)
1968 demonstration of Spaceball