A phosphor is a chemical compound that emits light when it is exposed to light of a different wavelength (i.e.
color). Phosphors do not contain the chemical element Phosphorus, which can be made to glow a different way. This sometimes causes confusion. Phosphors are used in many types of lighting, including fluorescent bulbs where they change the ultraviolet light produced by excited mercury vapor into visible light.
The chemistry of phosphors varies greatly depending on what the phosphor is to be used for. Phosphors include 'glow in the dark' materials that can be found in novelties, toys, and emergency safety lighting for buildings. They are used in the screens of older style cathode ray tube televisions to make visible light from an electron beam. They can also be used to visibly detect ionizing radiation. Light-emitting diodes are devices that often use phosphors to obtain a particular color or color temperature.
This article uses material from the Wikipedia Simple English article Phosphor, which is released under the Creative Commons Attribution-ShareAlike 3.0 license ("CC BY-SA 3.0"); additional terms may apply (view authors). Content is available under CC BY-SA 4.0 unless otherwise noted. Images, videos and audio are available under their respective licenses.
®Wikipedia is a registered trademark of the Wiki Foundation, Inc. Wiki Simple English (DUHOCTRUNGQUOC.VN) is an independent company and has no affiliation with Wiki Foundation.