Word: aureus
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Dates: during 1930-1939
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Electrons make impressions on photographic emulsions just as light particles do. Using a magnification factor of 20,400, the Siemens & Halske scientists obtained pictures of the pus germ, Staphylococcus aureus, as big as pennies. In photographs with ordinary high-power microscopes, such germs show up pinhead-size...