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.