1. Who invented Laser ?

Answer:

Charles H. Townes

2. Who invented Telescope ?

Answer: Hans Lippershey of Netherlands in 1608.

3. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.

4. Who invented Microphone ?

Answer:

Emile Berliner invented the first microphone in 1876.

5. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

6. Who invented Biochemistry ?

Answer: Jan Baptista Van Helmont of Belgium in 1648.

7. Who invented Steam Engine (Condenser)

Answer: James Watt of Britain in 1765