1. Who invented Calculus ?

Answer: Newton of Britain in 1670.

2. Who invented Laser ?

Answer:

Charles H. Townes

3. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

4. Who invented Computer ?

Answer:

Charles Babbage

5. Who invented Neutron ?

Answer:

JAMES CHADWICK in 1932

6. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

7. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.