1. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

2. Who invented Optical Fibre ?

Answer:

Indian-born American physicist Narinder Kapany

3. Who invented colour television ?

Answer:

Peter Carl Goldmark

4. Who invented X-ray ?

Answer: W.K. Roentgen of Germany in 1895.

5. Who invented Vitamin D ?

Answer:

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

6. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

7. Who invented Vitamin C ?

Answer:

Scottish naval surgeon James Lind in 1747