Month → October

20
Oct

October 20, 1919 – Birth of Tracy Hall, the first person to manufacture synthetic diamonds for the first time at the General Electric Research Laboratories

20
Oct

October 20, 1728 – All of Ole Rømer's manuscripts are lost in a fire at the Copenhagen observatory

21
Oct

On October 21, 1879, Thomas Alva Edison's light bulb went on

22
Oct

October 22, 1881 – Birth of Clinton Davisson, discoverer of the diffraction of electrons from crystalline surfaces

23
Oct

October 23 – Mol Day, Happy day for Chemists!

24
Oct

October 24, 1836 – János Irinyi, presents his new invention, silent and non-explosive matches

25
Oct

October 25, 1926 – Death of Antonius van den Broek, the physicist who established the direct correlation between the charge of the atomic nucleus and the periodic table

26
Oct

October 26, 1861 – Physicist Johann Philipp Reis presents the telephone he had invented to the Physics Association in Frankfurt am Main

30
Oct

October 30, 1975 – Death of Gustav Hertz, Nobel Prize winner for his research on the passage of electrons through a gas

31
Oct

October 31, 1794 - John Dalton presented his study on the disease that is now associated with his name, Daltonism

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