10th anniversary Olympic games open at Athens, Greece 

New rule puts umpire in sole charge of all game balls 

Robert Oppenheimer, US physicist and atomic bomb pioneer, is born 

American Power Boat Association forms 

NY Highlanders (Yankees) 1st game, Senators win 1-Mar before 11,950 

James Hargreaves, English inventor of the spinning jenny, dies 

King Charles II granted a charter to the Royal Society of London, which became an important center of scientific activity in England 

John Tradescant, English naturalist, dies