1. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

2. Who invented Floppy disk ?

Answer: IBM in 1970

3. Who invented Calculus ?

Answer: Newton of Britain in 1670.

4. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

5. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

6. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

7. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832