What did Ernest Walton discover?

Answer 1

Physicist Ernest Walton (1903-1995) shared the achievement of the first artificial disintegration of an atomic nucleus without the use of radioactive elements. For this work, Walton and John D. Cockroft shared the 1951 Nobel Prize in physics. (Biography)

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Answer 2

Ernest Walton, along with John Cockcroft, discovered the process of splitting the atomic nucleus using artificially accelerated particles. This experiment, known as "splitting the atom," confirmed the theories of nuclear fission and paved the way for advancements in nuclear physics and energy. Their work laid the foundation for the development of nuclear weapons and nuclear power.