1. Who invented Transistor ?

Answer: Bardeen, Shockley & Britain of U.S.A. in 1948

2. Who invented CT scan ?

Answer: Hounsfield by Britain in 1973.

3. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.

4. Who invented colour television ?

Answer:

Peter Carl Goldmark

5. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

6. Who invented X-ray ?

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

7. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.