1. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

2. Who invented Submarine ?

Answer:

John Philip Holland

3. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

4. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

5. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

6. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

7. Who invented Hydrogen bomb ?

Answer:

Edward Teller