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In 1906, Lee De Forest found that a small voltage on a grid of metal wires between the cathode and anode could control a current in a beam of cathode rays passing through a vacuum tube. His invention, called the triode , was the first device that could amplify electric signals, and revolutionized electrical technology, creating the new field of ...
A cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen. [2] The images may represent electrical waveforms on an oscilloscope , a frame of video on an analog television set (TV), digital raster graphics on a computer monitor , or ...
U.S. patent 2,455,992, filed by Goldsmith and Estle Ray Mann on January 25, 1947, describes the world's first cathode ray tube based game, the "Cathode-ray tube amusement device". It was inspired by the radar displays used in World War II . [ 13 ]
The television goggles used small cathode-ray tubes for the display and included a separate screen for each eye, much like modern VR headsets. The large antenna made this device look alien-like ...
Pages in category "Cathode ray tube" The following 19 pages are in this category, out of 19 total. This list may not reflect recent changes. ...
The magic eye tube (or valve) for tuning radio receivers was invented in 1932 by Allen B. DuMont (who spent most of the 1930s improving the lifetime of cathode ray tubes, and ultimately formed the DuMont Television Network). [5] [6] [7] The RCA 6E5 from 1935 was the first commercial tube. [8] [9]
Braun's original cold-cathode CRT, the Braun tube, 1897. The enduring fame of Ferdinand Braun is largely due to his invention of the cathode-ray tube, which is still commonly referred to as the "Braun tube." Today, the term typically refers to a high-vacuum tube in which an electron beam can be deflected in both horizontal and vertical directions.
In a general sense, an FED consists of a matrix of cathode-ray tubes, each tube producing a single sub-pixel, grouped in threes to form red-green-blue (RGB) pixels. FEDs combine the advantages of CRTs, namely their high contrast levels and very fast response times, with the packaging advantages of LCD and other flat-panel technologies. They ...