Article Detail Who invented CT scan ? Answer: Hounsfield by Britain in 1973. Similar Questions : 1. Who invented Bacteria ? Answer: Leeuwenhock of Netherlands in 1683 2. Who invented Periodic table ? Answer: Dmitri Mendeleev invented Periodic Table 3. Who invented Gramophone ? Answer: Emile Berliner in 1887. 4. Who invented Helicopter ? Answer: Igor Sikorsky 5. Who invented Biochemistry ? Answer: Jan Baptista Van Helmont of Belgium in 1648. 6. Who invented Steam Engine (Condenser) Answer: James Watt of Britain in 1765 7. Who invented Logarithms ? Answer: John Napier (Scotland) invented Logarithm Read more from - Important Inventions