March 9 
1851: Hans Christian Oersted, who discovered electromagnetism and after whom the unit of magnetic field (H) is named, was born. 1856: Edward Acheson, inventor of abrasive carborundum, the 2nd-hardest substance after diamond, was born. 1893: Dewar announced at the meeting of the Royal Society that he had succeeded in freezing air into a clear, transparent solid. 1932: Ford built its first V-8 vehicle. 1939: Russian cosmonaut Yuri Gagarin, the first human in space, was born. 1942: Robert Bosch, the German engineer and industrialist who was invented the spark plug and magneto, died. 1959: The first known radar contact was made with Venus. 1961: Sputnik 9 carried Chernushka the dog into orbit. 1964: The first Ford Mustang rolled off of the Ford assembly line. |