An electron beam is a stream of high-speed electrons that are used to produce images on a computer monitor.
The electron beam is generated by an electron gun at the back of the monitor. It is then focused and directed by electromagnetic coils to hit phosphor dots on the screen, creating the pixels that make up an image.
The electron beam is responsible for creating the images on the computer monitor. By rapidly scanning across the screen, it creates a series of pixels that form the images we see.
CRT monitors use an electron beam to create images, while LCD monitors use a different technology called liquid crystal display. This means that CRT monitors can produce brighter and more vibrant colors, but are bulkier and consume more energy compared to LCD monitors.
An electron beam in a computer monitor is not harmful to humans. However, if the monitor is damaged or malfunctioning, it is possible for the electron beam to emit radiation that could be harmful. It is important to properly dispose of old or damaged monitors to prevent any potential harm.