Robert Hooke FRS was an English polymath active as a scientist and architect, who, using a microscope, was the first to visualize a micro-organism. An impoverished scientific inquirer in young adulthood, he found wealth and esteem by performing over half of the architectural surveys after London's great fire of 1666.

Who is Robert Hooke and what did he discover?

Robert Hooke, (born July 18 [July 28, New Style], 1635, Freshwater, Isle of Wight, England—died March 3, 1703, London), English physicist who discovered the law of elasticity, known as Hooke's law, and who did research in a remarkable variety of fields.

Where did Hooke discover cells?

1655 – Hooke described 'cells' in cork. 1674 – Leeuwenhoek discovered protozoa. He saw bacteria some 9 years later.