1. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

2. Who invented Helicopter ?

Answer:

Igor Sikorsky

3. Who invented Super Computer ?

Answer:

Seymour Cray

4. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765

5. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

6. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

7. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504