1. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

2. Who invented Calculus ?

Answer: Newton of Britain in 1670.

3. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

4. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

5. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

6. Who invented Stethoscope ?

Answer: Laennec of French in 1819.

7. Who invented Super Computer ?

Answer:

Seymour Cray