Events
1935 - Edwin Armstrong presents his paper "A Method of Reducing Disturbances in Radio Signaling by a System of Frequency Modulation."
Deaths
1771 - John Bevis, English physician and astronomer
1822 - Claude Louis Berthollet, French chemist
1964 - Hans von Euler-Chelpin, German-born chemist and Nobel Prize laureate
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Births
1571 - Metius, Dutch mathematician and astronomer