Newton's cradle Newton's cradle Newton’s cradle is a device that demonstrates conservation of momentum and energy using a series of swinging spheres. When one sphere at the end is lifted and released, it strikes the stationary spheres, transmitting a force through the stationary spheres that pushes the last sphere upward. The last sphere swings back and strikes the still nearly stationary spheres, repeating the effect in the opposite direction. The device is named after 17th-century English scientist Sir Isaac Newton. It is also known as Newton's balls or Executive Ball Clicker. A typical Newton's cradle consists of a series of identically sized
John Adams (physicist) University of London, University of Oxford and Imperial College London is named in his honour. A main road ("Route Adams") in CERN's Prevessin site is also named after him. John Adams (physicist) Sir John Bertram Adams (24 May 1920 – 3 March 1984) was an English accelerator physicist and administrator. During World War II, Adams worked in the Radar laboratories of the British Ministry of Aircraft Production where he learned physics and engineering on the job. After the war he moved to Harwell and the Atomic Energy Research Establishment. He had no qualifications but became expert in the design and