File:JILA's strontium optical atomic clock.jpg
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| Description |
English: JILA's strontium optical atomic clock is now the world's most accurate clock based on neutral atoms. Shining a blue laser onto ultracold strontium atoms in an optical trap tests how efficiently a previous burst of light from a red laser has boosted the atoms to an excited state. Only those atoms that remain in the lower energy state respond to the blue laser, causing the fluorescence seen here.
Credit: Sebastian Blatt, JILA, University of Colorado |
| Date | |
| Source | National Science Foundation |
| Author | Sebastian Blatt, JILA, University of Colorado |
| Permission (Reusing this file) |
Public Domain |
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:14, 25 April 2019 | | 234 × 220 (5 KB) | Kesäperuna (talk | contribs) | Cropped 4 % horizontally using CropTool with precise mode. |
| 20:33, 24 April 2019 |  | 243 × 220 (6 KB) | Kesäperuna (talk | contribs) | Cropped 31 % horizontally using CropTool with lossless mode. | |
| 05:00, 10 July 2009 |  | 350 × 220 (6 KB) | Ti-30X (talk | contribs) | {{Information |Description={{en|1=JILA's strontium optical atomic clock is now the world's most accurate clock based on neutral atoms. Shining a blue laser onto ultracold strontium atoms in an optical trap tests how efficiently a previous burst of light f |
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