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Inside a cathode ray tube (CRT), an electron gun emits a stream of electrons, which are accelerated and focused into a narrow beam. This beam is directed towards a phosphorescent screen coated with phosphor materials that emit light when struck by the electrons. By rapidly deflecting the beam using electromagnetic coils, the CRT can create varying intensity patterns, resulting in waveform displays. The modulation of the electron beam's position and intensity produces the visual representation of waveforms on the screen.

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3mo ago

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