File:Ruby rod (manmade) fluorescing 2.jpg
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| Description |
English: Ruby is a red, gem-quality variety of corundum, which is aluminum oxide (Al2O3). Ruby and corundum have a nonmetallic luster, form hexagonal crystals, have a white streak, and are very hard (H = 9 on the Mohs Hardness Scale). Ruby can be synthetically manufactured - seen here is a manmade rod of rudy under ultraviolet light (black light). The glow is fluorescence. When short-wavelength ultraviolet radiation, long-wavelength ultraviolet radiation, or x-rays bombard atoms, excitation of electrons occurs. The electrons do not remain in an energetically excited state - they quickly give off energy and resume their normal energy levels. If the electron energy release is in the visible spectrum of light, a substance glows, or fluoresces. |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/53661257347/ |
| Author | James St. John |
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/53661257347. It was reviewed on 18 April 2024 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:34, 18 April 2024 | | 3,571 × 962 (1.94 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/53661257347/ with UploadWizard |
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