Question

The electron microscope was invented in Germany during the 1930's by _____.
Anton van Leeuwenhoek
Robert Hooke
Hans and Zaccharias Janssen
Charles Spencer
Max Knott and Ernst Ruska
Spencer, maybe?

Answer 1

Max Knoll and Ernst Ruska where the inventors of the electron microscope
Hope this helps :))

Answer 2

Answer is Max Knott and Ernst Ruska