A portrait of the Austrian inventor and electrical engineer Nikolai Tesla sat inside a huge generator with electric arcs jumping across him.

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Photo credit: © CBW / Alamy / Afripics
License: Licensed
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Keywords: advances, austrian, brainy, brilliance, brilliant, famous, genius, intelligence, intelligent, inventor, nikolai, research, researchers, science, sciences, scientist, scientists, smart, tesla, theoreticians, thinker, thinkers