Cathode ray tube

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Cathode ray tubes use an electron gun and fluorescent screen to create images through light emitted from the screen. An evacuated glass envelope contains the electron gun, which shoots electrons at the screen, causing phosphors to glow and form the image. Color CRTs use three electron guns and phosphors to produce red, green, and blue light, creating a full color image. While bulky and potentially hazardous, CRTs provide high quality images through superior color and contrast compared to other display technologies.

CATHODE RAY TUBE PRESENTED BY CHIRANJIB MISHRA

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The document discusses the cathode ray tube (CRT) technology used in early computer monitors and televisions. It describes how a CRT works by using an electron gun to shoot a beam of electrons that excite phosphors on the screen, producing an image. The document outlines the history of the CRT from its discovery in the 1860s to its use in early TVs and monitors. It also discusses the advantages of CRTs like good color accuracy but notes disadvantages like health risks from radiation and large size.

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This document provides an overview of cathode ray tubes (CRTs), including their components, functioning, applications, advantages, and disadvantages. Specifically, it describes the key parts of a CRT - the electron gun, deflection system, fluorescent screen, and glass tube/base. It explains how CRTs work by using an electron beam to scan and excite phosphor dots on the screen, creating a visible image. Common applications of CRTs mentioned are televisions, computer monitors, radar displays, and oscilloscopes. Advantages include brightness and image quality, while disadvantages are health hazards from radiation and heat generation.

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A CRT monitor works by using an electron gun to excite phosphor on the inside of a screen, causing it to glow. It contains three electron guns that fire beams of red, green, and blue to create colors by combining different intensities of the primary colors. The electron beams travel across the screen rapidly, guided by deflection coils and synchronized by horizontal and vertical sync signals to refresh the screen and prevent flickering. Key specifications that affect image quality include screen size, resolution measured in pixels, refresh rate measured in Hz, and dot pitch which affects sharpness.

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The document summarizes the cathode ray tube (CRT) monitor. It describes how CRTs work by using an electron gun to shoot a beam of electrons at phosphor dots on the inside of the glass screen, which glow different colors to create a visible image. The cathode ray tube contains a heated filament that emits electrons, which are accelerated toward the screen by a voltage difference and controlled by electric fields to scan across pixels in lines to display images or waveforms. While CRTs provided better image quality than early LCDs, they also had disadvantages like large size, potential health risks from radiation and magnetic fields, and being heavy.

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