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  • Regarded as the first to recognize the full potential of a "computing machine" and one of the first computer programmers.
    Ada Lovelace (1815–1852) English mathematician and writer
  • Discovered the world's largest niobium ore (pyrochlore) mine, in Minas Gerais. Used mostly in steel alloys, niobium enhances the strength of the steel. Also described four new minerals: eschwegite, arrojadite, pennaite, and giannettite.
    Djalma Guimarães (1894–1973) Brazilian geochemist
  • Conducted pioneer research on radioactivity and discovered two elements: polonium and radium. First woman to win the Nobel Prize; the only woman to win it twice.
    Marie Curie (1867–1934) Polish physicist and chemist
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