历史上最伟大发明的真相
ron gun that beams images onto screen that can receive or transmit signals. But the cathode ray tube itself has so many fathers that it’s difficult to say exactly who invented even the central organ of the television, much less the television itself. In 1927, Farnsworth projected a straight line on a machine he called the Image Dissector, which is truly the basis for the all-electronic televisio
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