Phosphorescence

Phosphorescence: the phenomenon on which X-ray screens and other technologies are based

Phosphorescence is a phenomenon that manifests itself in the form of prolonged luminescence after the cessation of the action of the exciting factor. This property is used in various technologies such as X-ray screens, cathode ray tubes and others.

The essence of the Phosphorescence phenomenon is that when a material is exposed to a certain exciting factor, for example, light or electrons, the excitation energy is transferred to the electrons located in the atoms of the material. This causes electrons to move to higher energy levels. When the exciting factor ceases to act, the electrons begin to gradually return to their original energy levels, emitting energy in the form of photons.

These photons can be observed in the form of a glow of the material, which continues after the cessation of the exciting factor. This glow is called phosphorescence.

One of the most common uses of phosphorescence is in the creation of X-ray screens. X-ray screens consist of a material that can be excited by x-rays. When an X-ray beam passes through human tissue and hits the screen, the screen material begins to glow as a result of phosphorescence. This glow can be recorded and used to create images of human internal organs.

In addition, phosphorescence is used in cathode ray tubes, which are used in televisions and computer monitors. On the back wall of the screen there is a layer of material that begins to glow when electrons hit it. This glow creates the image on the screen.

Phosphorescence is also used in various other fields, such as optics, reflective paints and coatings, and scientific research.

Thus, phosphorescence is an important phenomenon that has found wide application in various technologies. It allows you to create unique materials and devices that are used in many fields of science and technology.

Introduction Phosphorescent radiation is a light flux that occurs during a chemical reaction. To study phosphorescence, a photographic camera and some other instruments are used, for example, radiation sources and light receivers. The brightness of the emitted flux depends on the properties of the substances between which the chemical interaction occurred. This depends mainly on the optical density of the reactions and the sensitivity of the elements included in these mixtures. Most often, observations of fluorescent glow are carried out using the following instruments: microscope, telescope, photometer and video camera. Radiation with wavelengths shorter than yellow is perceived by humans as bright violet or greenish light.