1. Who invented Laser ?

Answer:

Charles H. Townes

2. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

3. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

4. Who invented Transistor ?

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

5. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.

6. Who invented X-ray ?

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

7. Who invented Morphine ?

Answer: Friderich Sertumer of Germany in 1805