Template:Selected anniversaries/February 12
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1916: Mathematician, philosopher, and academic Richard Dedekind dies. He made important contributions to abstract algebra (particularly ring theory), algebraic number theory and the definition of the real numbers.
1947: Chemist Moses Gomberg dies. He identified the triphenylmethyl radical, the first persistent radical to be discovered, and is thus known as the founder of radical chemistry.
1983: High-energy literature research improves legibility of neon signs.
2016: Tunguska Event Preservation Society pledge drive day.