1. Who invented Radiocarbon ?

Answer:

Willard Libby

2. Who invented Relativity Theory ?

Answer: Einstein of Germany in 1905.

3. Who invented watch ?

Answer:

Peter Henlein invented the first portable time piece in 1504

4. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888

5. Who invented Gramophone ?

Answer:

Emile Berliner in 1887.

6. Who invented Logarithms ?

Answer:

John Napier (Scotland) invented Logarithm

7. Who invented Dynamo ?

Answer:

Hypolite Pixii of France in 1832