![]() ![]() It's made up of three parts: the electron gun, the phosphor-coated screen, and the glass viewing surface. ![]() A CRT was essentially the picture tube in a television, the component that creates and receives the beams of electrons that show the image. If you're old enough to remember the days before flat-screen TVs and computer monitors, then you remember how ubiquitous cathode-ray tubes (CRTs) became. Karl Ferdinand Braun, who would later win a Nobel Prize for his work with "wireless telegraphy," created the first cathode-ray tube, naming it the Braun Tube after himself. While the science wasn't fully understood at the time (the scientists thought they were seeing rays or waves, rather than electrons), this discovery became the basis for a slew of electrical innovations. in physics, where he began researching a device that was becoming essential for electronic communications: the cathode-ray tube.Ĭathode rays- beams of high-speed electrons leaving a polarized, heated electric device in a vacuum tube-were first observed in 1869 by German physicist Johann Hittrof and named by Eugen Goldstein. In 1931, he went to Cornell to get his Ph.D. (While she preferred the ear trumpet, the amplifier worked.) Through high school and into undergrad at Furman University, Goldsmith became obsessed with electronics, especially crystal radio sets, a new technology that had just become popular. Goldsmith, born in 1910, got his start in electronics when he was only ten years old building an amplifier for his hard-of-hearing grandmother who was using an ear trumpet. "It never registered that this would have been the first video game." ![]()
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