Chemist John Dalton is credited with pioneering modern atomic theory. He was also the first to study color blindness. Who Was John Dalton? During John Dalton's early career, he identified the hereditary nature of red-green color blindness. In 1803 he revealed the concept of Dalton’s Law of Partial Pressures. John Dalton contributed a lot to the atomic theory. He was the first scientist to explain the behavior of atoms in terms of the measurement of weight. He also revealed the concept of Dalton's Law of Partial Pressures in 1803. Rutherford’s Impact on the Atomic Theory Rutherford had the most important contribution to the Atomic Theory because of his discoveries of the nucleus and protons, and his contribution to nuclear chemistry. Hope this helped!
