History Of microscopes
Hans and Zaccharias Janssen
Galileo
Anton Van Leeuwenhoek
Robert Hooke
Max Knoll and Ernst Ruska
Max Knoll and Ernst Ruska (first electronic microscope)
Date designed: 1931
How it works: Put your eye on the high voltage eye piece the see the specimen.
What cells looked like: The electron microscope has much greater resolution that you can see finer objects with finer detail.