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Who developed the first electron microscope?

Gerd Binnig

Ernst Ruska

Heinrich Rohrer

Hyron Spinrad

Ernst Ruska was a German physicist who won the Nobel Prize in Physics in 1986 for his work in electron optics. In 1931, he demonstrated that a magnetic coil could act as an electron lens, and used several coils in a series to build the first electron microscope in 1933.

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