Events
1675 - Gottfried Leibniz demonstrated integral calculus for the first time to find the area under the graph of y = f(x) function.
Births
1743 - Carl Peter Thunberg, Swedish naturalist
1930 - Hugh Everett, American physicist
Deaths
1686 - Otto von Guericke, German scientist
1884 - Alfred Brehm German zoologist
1973 - Artturi Ilmari Virtanen, Finnish chemist and Nobel Prize laureate