< p style="text-align: justify;">Cathode ray tubes (CRTs) are electronic devices that were widely used in older television sets and computer monitors. These tubes emit a stream of particles known as cathode rays. These rays consist of three main types of particles: electrons, photons, and X-rays. Electrons are the primary particles emitted by CRTs. These negatively charged subatomic particles are accelerated towards the screen by an electric field. As they strike the phosphor-coated screen, they cause it to emit light, producing the images we see on the screen. Electrons emitted by CRTs have very low energy and do not pose any significant health risks. In addition to electrons, CRTs also emit photons. Photons are particles of light and are responsible for the brightness and color of the images produced by the CRT. When the electrons strike the phosphor-coated screen, they excite the atoms in the phosphor, causing them to release photons. These photons then travel through the glass screen and reach our eyes, allowing us to see the images. Furthermore, CRTs also emit X-rays, although in relatively small amounts. X-rays are a form of electromagnetic radiation with higher energy than visible light. They are produced when the electrons in the CRT collide with the metal components of the tube, such as the anode or the glass screen. The production of X-rays in CRTs is a byproduct of the electron acceleration process and is usually shielded by lead-lined glass to protect the user from unnecessary X-ray exposure. It is worth noting that the emission of X-rays by CRTs is significantly lower compared to X-ray machines used in medical and industrial settings. The levels of X-ray radiation emitted by CRTs are considered safe and do not pose any health risks to users. In conclusion, cathode ray tubes emit electrons, photons, and a small amount of X-rays. While electrons and photons are essential for producing the images on the screen, X-rays are a byproduct of the electron acceleration process. However, the levels of X-ray radiation emitted by CRTs are minimal and do not pose any significant health risks to users.

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