1753 |
Count Rumford (Benjamin Thompson) invented simple photometer; researcher in heat; demonstrated first law of thermodynamics;
improved cooking and heating systems and animal breeding; married Antoine Lavoisier's widow, was born.
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1838 |
A. Crum Brown devised modern structural formulae, 1864; formulated rules for substitution in benzene derivatives named after
him; researcher in theory of isomerism and organic compounds of sulfur, was born.
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1903 |
Ferdinand G. Brickwedde codiscovered deuterium, 1932, with Harold C. Urey and G. M. Murphy, was born. |