2010; for CATHODE RAYS see BETA RAYS 1985-2009, RADIATION, IONIZING 1976-1984, see RADIATION 1963-1975; for CATHODE RAY TUBE DISPLAY see DATA DISPLAY 1991-2009
History Note
2010; for CATHODE RAYS use BETA RAYS 1985-2009, RADIATION, IONIZING 1976-1984, use RADIATION 1963-1975; for CATHODE RAY TUBE DISPLAY see DATA DISPLAY 1991-2009