Portal:History of science/Selected anniversaries/October 29

October 29:

 * 1675 – Leibniz makes the first use of the long s (∫) as a symbol of the integral in calculus


 * 1783 – Death of Jean le Rond d'Alembert, French mathematician (b. 1717)


 * 1827 – Birth of Marcellin Berthelot, French chemist (d. 1907)


 * 1880 – Birth of Abram Ioffe, Soviet physicist (d. 1960)


 * 1969 – The first-ever computer-to-computer link is established on ARPANET, the precursor to the Internet


 * 1971 – Death of Arne Tiselius, Swedish chemist, Nobel laureate (b. 1902)


 * 1991 – The American Galileo spacecraft makes its closest approach to 951 Gaspra, becoming the first probe to visit an asteroid


 * 2004 – Death of Peter Twinn, English mathematician (b. 1916)