May 27

1890: A patent was issued for the first jukebox. 1901: The Edison Storage Battery Company was organized. 1909: William Hansen, inventor of the klystron tube, was born. 1919: A U.S. Navy NC-4 flying boat completed the first transatlantic flight. 1937: The Golden Gate Bridge was opened to the public for foot traffic. 1930: Cellophane transparent adhesive tape was patented by inventor Richard G. Drew, who sold the patent to 3M. 1931: The first U.S. full scale (30 by 60 feet)wind tunnel for testing airplanes was opened in Langley Field Research Center, VA. 1931: Auguste Piccard and Charles Knipfer became the first humans to venture into the stratosphere when they rode their balloon to an altitude of 51,783 feet. 1941: The German battleship Bismarck was sunk by British naval and air forces. 1961: The first black light was sold. 1988: Ernst Ruska, an electrical engineer who invented the electron microscope, died. 1994: The highest temperature produced in a lab was a plasma temperature of 510 M°C in the Tokamak Fusion Test Reactor operated at Princeton.