1996 Death Bert Geoffrey Achong, electron microscopist, dies at 67 1961 Death Rheinhold Rudenberg, inventor of electron microscope, dies 1961 Death Lee de Forest, inventor of the electron Tube, dies at 87 1940 Event 1st electron microscope demonstrated (RCA), Philadelphia, Pa 1940 Event RCA demonstrated its new electron microscope in Philadelphia 1936 Event 1st electron tube to enable night vision described, St. Louis, Missouri 1928 Birthday Bert Geoffrey Achong, inventor, electron microscopist 1892 Birthday George Thomson, demonstrated electron diffraction, Nobel 1937 1856 Birthday Joseph John Thomson, Eng, physicist discovered electron, Nobel 1906
