1. Who invented Atomic theory ?

Answer: Dalton of Britain in 1803.

2. Who invented paper ?

Answer:

Cai Lun

3. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

4. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

5. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

6. Who invented Chemotherapy ?

Answer: Paracelsus of Switzerland

7. Who invented Radar ?

Answer:

Sir Robert Watson-Watt