1. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

2. Who invented Safety Pin ?

Answer: Walter Hunt of U.S.A. in 1849

3. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951

4. Who invented Bacteria ?

Answer: Leeuwenhock of Netherlands in 1683

5. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

6. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

7. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.