"First Baron Rutherford" refers to Ernest Rutherford, a renowned physicist and chemist from New Zealand. He was a pioneer in the field of nuclear physics and is famous for discovering the concept of radioactive half-life. As a scientist, Rutherford made numerous contributions to the field of science, including the discovery of the atomic nucleus and the proton. Some synonymous terms for "First Baron Rutherford" are Ernest Rutherford, Baron Rutherford, Rutherford, and Lord Rutherford. His achievements in science have been recognized globally and he is regarded as one of the most influential scientists of the 20th century.