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1623 - William Petty, English scientist and philosopher
1907 - Rachel Carson, American marine biologist and science writer
Deaths
1781 - Giovanni Battista Beccaria, Italian physicist
1896 - Aleksandr Grigorievich Stoletov, Russian physicist
1987 - John Howard Northrop, American chemist, Nobel laureate
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To invent an airplane is nothing. To build one is something. But to fly is everything.
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