1. Who invented Calculus ?

Answer: Newton of Britain in 1670.

2. Who invented Safety Pin ?

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

3. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor

4. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805

5. Who invented Vitamin D ?

Answer:

Edward Mellanby discovered Vitamin D while researching a disease called rickets in 1922

6. Who invented Locomotive ?

Answer:

George Stephenson was first to buit steam locomotives.

7. Who invented Circulation of blood ?

Answer: William Harvey of Britain in 1628