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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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23 h 50 m, 31 mar 1931 año - Electron Microscope
Descripción:
Max Knott and Ernst Ruska co-invented it to magnify an image.
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By
Michael O'Brien
14 sep 2017
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580
fecha:
23 h 50 m, 31 mar 1931 año
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~ 94 years ago
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