J. Robert Oppenheimer was an American theoretical physicist.
Enrico Fermi was an Italian physicist and Nobel laureate known for his pioneering work in nuclear physics, including the development of the first nuclear reactor.
Raja Ramanna was an Indian nuclear physicist who played a pivotal role in the development of India's nuclear program and served as Chairman of the Atomic Energy Commission.
Lise Meitner was an Austrian-Swedish physicist who co-discovered nuclear fission and made significant contributions to the development of atomic theory.
Ernest Walton was an Irish physicist and Nobel laureate, most famous for his pioneering work on splitting the atomic nucleus.