1. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

2. Who invented Java Language ?

Answer:

James Gosling

3. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

4. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

5. Who invented Vitamin A ?

Answer: Mc Collum and M.Davis of U.S.A. in 1913

6. Who invented Safety Pin ?

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

7. Who invented Transformer ?

Answer:

Ottó Bláthy