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Nicolas-Jacques Conté was a French painter, balloonist, army officer, and inventor of the modern pencil.
He distinguished himself for his mechanical genius which was of great avail to the French army in Egypt. Napoleon called him “a univ... |
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Salomon August Andrée, during his lifetime most often known as S. A. Andrée, was a Swedish engineer, physicist, aeronaut and polar explorer who died while leading an attempt to reach the Geographic North Pole by hydrogen balloon. The balloo... |
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