= 20th-century South African physicists
{wiki=Category:20th-century_South_African_physicists}
The 20th century saw significant contributions to physics from South African scientists, who made strides in various areas of research. Here are notable physicists from South Africa during that time: 1. **Ernest Orlando Lawrence**: Although he spent much of his career in the United States, Lawrence, born in South Africa, is famous for inventing the cyclotron, a type of particle accelerator. His work earned him the Nobel Prize in Physics in 1939.
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