1. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

2. Who invented Ballistic missile ?

Answer: Wemher von Braun of Germany in 1944.

3. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

4. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

5. Who invented Piano ?

Answer:

Bartolomeo Cristofori

6. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

7. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.