May 7

1847: The American Medical Association (AMA) was established. 1855: Oskar von Miller, who pioneered the electric power industry in Germany, was born. 1909: Edwin Land, inventor of the Polaroid Land Camera, was born. 1942: In the Battle of the Coral Sea, Japanese and American navies attacked each other with carrier planes - it was the first time in the history of naval warfare where two enemy fleets fought without seeing each other. 1945: Germany signed unconditional surrender ending World War II (it would take effect the next day). 1952: The concept of the integrated circuit chip was first published by Geoffrey Dummer. 1963: The U.S. launched the Telstar II communications satellite, which on its tenth orbit transmitted the first transatlantic TV program seen in color. 1992: The Endeavour space shuttle blasted off on its maiden voyage.