Article Detail Who invented Atomic numbers ? Answer: Moseley of Britain in 1913 Similar Questions : 1. Who invented Vitamin D ? Answer: Edward Mellanby discovered Vitamin D while researching a disease called rickets in 1922 2. Who invented Aeroplane Answer: Orville & Wilbur Wright in 1903 3. Who invented Aspirin ? Answer: Felix Hoffmann invented Aspirin 4. Who invented Circulation of blood ? Answer: William Harvey of Britain in 1628 5. Who invented Bicyle ? Answer: Kirkpatrick Macmillan of Britain. 6. Who invented X-ray ? Answer: W.K. Roentgen of Germany in 1895. 7. Who invented Chemotherapy ? Answer: Paracelsus of Switzerland Read more from - Important Inventions