1. Who invented Steam Engine ?

Answer: Thomas Savery of Britain in 1698

2. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

3. Who invented Radar ?

Answer:

Sir Robert Watson-Watt

4. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

5. Who invented Bicyle ?

Answer: Kirkpatrick Macmillan of Britain.

6. Who invented X-ray ?

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

7. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm