1. Who invented Laser ?

Answer:

Charles H. Townes

2. Who invented Penicillin ?

Answer: Alexander Fleming of Britain in 1928.

3. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

4. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

5. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

6. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

7. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913