Ernest Orlando Lawrence
|Died||August 27, 1958 (aged 57)|
|Known for||Nobel Prize in Physics in 1939|
Ernest Orlando Lawrence (October 8, 1901–1958) was an American physicist. he was born in South Dakota. He helped invent the nuclear bomb during World War II. Lawrence won the Nobel prize for physics in 1939. His work was important in the science of nuclear physics. He worked out a way of measuring the mass of an electron, part of an atom.