1. Who invented Barometer ?

Answer: Evangelista Torricelli of Italy in 1644

2. Who invented Vitamin D ?

Answer:

Edward Mellanby discovered Vitamin D while researching a disease called rickets in 1922

3. Who invented Aeroplane

Answer: Orville & Wilbur Wright in 1903

4. Who invented Super Computer ?

Answer:

Seymour Cray

5. Who invented Helicopter ?

Answer:

Igor Sikorsky

6. Who invented Neon Lamp ?

Answer:

Georges Claude who was a French engineer, chemist and inventor

7. Who invented Stainless Steel ?

Answer: Harry Brearley of Britain in 1913.