March 9 in Science History: Discoveries, Scientists and Breakthroughs
March 9, 2025
1676 Cotton Mather is born on March 9, 1676. The American minister later promoted smallpox inoculation in colonial Boston after learning of the practice from the Ottoman world, helping reduce mortality during the 1721 epidemic.
1822 On March 9, 1822, the first United States patent for artificial teeth is issued to Charles Graham, marking an early milestone in dental prosthesis technology and the formal recognition of modern dentures.
1856 Edward Goodrich Acheson is born on March 9, 1856. The American inventor discovered silicon carbide and developed industrial electric furnaces for producing abrasives, transforming manufacturing and toolmaking.
1858 Albert Potts patents the first street-mounted mailbox in the United States on March 9, 1858, greatly improving urban postal systems and making public mail deposit more convenient in growing cities.
1962 Howard T. Engstrom dies on March 9, 1962. The American computer scientist helped develop early digital computers and contributed to the UNIVAC project, an important milestone in commercial computing.
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