1. Who invented Laser ?

Answer:

Charles H. Townes

2. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

3. Who invented Printing Press ?

Answer:

Johannes Gutenberg

4. Who invented Electron ?

Answer: Thomson. J of Britain in 1897

5. Who invented Refrigerator ?

Answer:

Oliver Evans in 1805

6. Who invented DNA Structure ?

Answer: Crick(UK), Waston(US), Wilkins(UK) in 1951

7. Who invented Television ?

Answer:

John Logie Baird