SNAP Invention and Discoveries questions

This personality is the father of radio science and has pioneered Bengali science fiction in the country. He invented the crescograph, a device that measures growth in plants. Identify him.

In 1679, Denis Papin, a French physicist, who assisted Robert Boyle, used the latter's scientific discoveries and invented what is today one of the most commonly found kitchen equipment. His invention earned him a membership of the Royal Society of England. What was the invention?

Who invented the microchip?