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Ruska

[ruhs-kuh; German roo s-kah]
noun
  1. Ernst (Au·gust Frie·drich) [ernst ou-goo st free-drikh] /ɛrnst ˈaʊ gʊst ˈfri drɪx/, 1906–88, German physicist and electrical engineer: developed electron microscope; Nobel prize 1986.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

ruska in Science

Ruska

[rŭskə]
  1. German electrical engineer who in 1931 developed the world's first electron microscope, which he continued to improve in subsequent work. For this work he shared with German physicist Gerd Binnig and Swiss physicist Heinrich Rohrer the 1986 Nobel Prize for physics.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.