The Crystal that Glows for Hours after Exposure to Sunlight; How this Occurs

There is a crystal which upon exposure to sunlight will glow in the dark for hours. This occurs via a highly unusual compound, with the reaction being triggered in part by a rare earth element. This video will discuss how phosphorescence occurs, and how certain ions can substitute other atoms in crystal structures. If you would like to support this channel, consider using one of the following links: (Patreon:   / geologyhub  ) (YouTube membership:    / @geologyhub  ) (Gemstone & Mineral Etsy store: http://prospectingarizona.etsy.com) (GeologyHub Merch Etsy store: http://geologyhub.etsy.com) Google Earth imagery used in this video: ©Google & Data Providers This video is protected under "fair use". If you see an image and/or video which is your own in this video, and/or think my discussion of a scientific paper (and/or discussion/mentioning of the data/information within a scientific paper) does not fall under the fair use doctrine, and wish for it to be censored or removed, contact me by email at [email protected] and I will make the necessary changes. Various licenses used in sections of this video (not the entire video, this video as a whole does not completely fall under one of these licenses) and/or in this video's thumbnail image: CC BY SA 3.0: https://creativecommons.org/licenses/... CC BY 4.0: https://creativecommons.org/licenses/... Sources/Citations: [1] Ailioaie, Laura & Litscher, Gerhard. (2020). Molecular and Cellular Mechanisms of Arthritis in Children and Adults: New Perspectives on Applied Photobiomodulation. International journal of molecular sciences. 21. 10.3390/ijms21186565., CC BY 4.0 [2] Wikipedia, https://en.wikipedia.org/wiki/Ionic_r..., CC BY SA 3.0 0:00 A Glowing Crystal 0:24 Strontium Aluminate 1:56 Light Wavelengths 2:18 Fluorescence 2:55 Phosphorescence 4:08 Atom Replacement