March 26

1814: French physician Joseph Guillotin, after whom the guillotine is named, died. 1833: Fleeming Jenkin, noted for his work in establishing units of electrical measurement, was born. 1854: Frederick Langenheim took the first photograph of a solar eclipse. 1865: Thomas Hancock, who founded the British rubber industry, died. 1923: the BBC began it weather broadcasting service. 1932: Henry Leland, founder of Cadillac Motors, died. 1937: Fred Maytag, a pioneer of automatic washing machines, died. 1949: Albert Stevens, who took the first photograph of Earth showing its curvature, died. 1953: Dr. Jonas Salk announced his vaccine for polio. 1973: Women were allowed on the trading floor of the London Stock Exchange for the first time. 1974: Edward Condon, of radar development and Franck-Condon fame, died. 1996: Electrical engineer and entrepreneur David Packard, who co-founded the Hewlett-Packard Company, died.