1839: Chocolate maker George Cadbury was born. 1843: Gustave-Gaspard Coriolis, who discovered the differential circulation effect that bears his name, died. 1876: Inventor Melville Bissell received a U.S. patent for the carpet sweeper. 1928: The first airplane flight using a diesel engine was made in a Stinson Detroiter. 1957: The U.S. conducted its first underground nuclear test, in the Nevada desert, at Area 12 of the Nevada Test Site. 1968: American physicist Chester Carlson, inventor of xerography, died. 1982: The first "smiley-face" emoticon :-) appeared on an online bulletin board. 1986: My wonderful daughter, Sally, was born - Happy Birthday! 1988: Israel launched its first satellite, "Offeq-1" (Horizon 1), onboard a Shavit rocket, becoming the ninth country in space. 2006: RF Cafe became an international entity with the acquisition of the rfcafe.eu domain name.