1. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

2. Who invented Vaccine of Rabies ?

Answer: Louis Pasteur of France in 1885

3. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

4. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

5. Who invented Aspirin ?

Answer:

Felix Hoffmann invented Aspirin

6. Who invented Stethoscope ?

Answer: Laennec of French in 1819.

7. Who invented Super Computer ?

Answer:

Seymour Cray