1. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

2. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

3. Who invented Safety Pin ?

Answer: Walter Hunt of U.S.A. in 1849

4. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628

5. Who invented Blood Transfusion ?

Answer: Jean-Baptiste Denys of France in 1625.

6. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888

7. Who invented Television ?

Answer:

John Logie Baird