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File:Quantum refrigerator at UCL (17626619658).jpg
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Size of this preview: 400 × 600 pixels. Other resolutions: 160 × 240 pixels | 320 × 480 pixels | 512 × 768 pixels | 682 × 1,024 pixels | 1,365 × 2,048 pixels | 3,316 × 4,974 pixels.
Original file (3,316 × 4,974 pixels, file size: 4.33 MB, MIME type: image/jpeg)
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Summary
| Description |
English: This photo shows a high-powered refrigerator, used for cooling samples to within a fraction of absolute zero. (When in operation, the refrigerator is entirely enclosed in a sealed and insulating casing.) As with a household fridge, the temperature is lower towards the bottom. The top shelf has a temperature of about 50 Kelvins (-223 Celsius), the next down is at around 4.4 kelvins (-269 Celsius), then 0.08K and 0.03K (-273 Celsius), just above absolute zero (0K).
The refrigerator is used to cool small objects, such as transistors, down to levels where thermal effects such as the vibration of the atoms in them are eliminated, allowing quantum effects to be observed. The refrigerator, which is cooled by a mixture of Helium-3 and Helium-4, is located in UCL's department of Physics & Astronomy. Photo credit: O. Usher (UCL MAPS) |
| Date | |
| Source | Quantum refrigerator at UCL |
| Author | UCL Mathematical and Physical Sciences from London, UK |
Licensing
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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- to share – to copy, distribute and transmit the work
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- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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This image was originally posted to Flickr by UCL Mathematical and Physical Sciences at https://flickr.com/photos/93636241@N07/17626619658. It was reviewed on 17 February 2017 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:23, 17 February 2017 | | 3,316 × 4,974 (4.33 MB) | wikimediacommons>Victorgrigas | Transferred from Flickr via Flickr2Commons |
File usage
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