1. Who invented Printing Press ?

Answer:

Johannes Gutenberg

2. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

3. Who invented X-ray ?

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

4. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

5. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

6. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

7. Who invented Television ?

Answer:

John Logie Baird