Article Detail Who invented Vitamin D ? Answer: Edward Mellanby discovered Vitamin D while researching a disease called rickets in 1922 Similar Questions : 1. Who invented Steam Engine ? Answer: Thomas Savery of Britain in 1698 2. Who invented Microphone ? Answer: Emile Berliner invented the first microphone in 1876. 3. Who invented Refrigerator ? Answer: Oliver Evans in 1805 4. Who invented Logarithms ? Answer: John Napier (Scotland) invented Logarithm 5. Who invented Barometer ? Answer: Evangelista Torricelli of Italy in 1644 6. Who invented Relativity Theory ? Answer: Einstein of Germany in 1905. 7. Who invented Automatic rifle ? Answer: John Browning of U.S.A. in 1918. Read more from - Important Inventions