1. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

2. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

3. Who invented paper ?

Answer:

Cai Lun

4. Who invented Vitamin B1 ?

Answer:

Casimir Funk discovered in 1912

5. Who invented Vitamin D ?

Answer:

Edward Mellanby discovered Vitamin D while researching a disease called rickets in 1922

6. Who invented Calculus ?

Answer: Newton of Britain in 1670.

7. Who invented Transformer ?

Answer:

Ottó Bláthy