February 18th
901 - Death of Thabit ibn Qurra, Arab astronomer and mathematician
1745 - Birth of Alessandro Volta, Italian physicist
1788 - Death of John Whitehurst, English clockmaker and scientist
1838 - Birth of Ernst Mach, Austrian physicist
1851 - Death of Carl Gustav Jakob Jacobi, German mathematician
1924 - Birth of Humberto Fernández Morán, Venezuelan scientist
1957 - Death of Henry Norris Russell, American astronomer
1967 - Death of J. Robert Oppenheimer, American physicist