File:Em-wave-applications-collage.jpg
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[edit]DescriptionEm-wave-applications-collage.jpg |
English: Some Applications of electromagnetic radiation: Mobile payment (top left), x-ray scanning (top right), microwave oven (bottom left) and radio astronomy (bottom right)
English: The 30-meter telescope on Pico Veleta in the Spanish Sierra Nevada is one of the two radio astronomy facilities operated by IRAM. Built in only four years (1980 to 1984) at an elevation of 2850 meters, it is one of today’s largest and most sensitive radio telescopes for tracing millimeter waves. The telescope is a classic single dish parabolic antenna, which allows the exploration of extended cosmic objects such as nearby galaxies and interstellar clouds. Due to its large surface, the 30-meter telescope is unrivalled in its sensitivity and is well adapted to detect weak sources. By pointing the telescope towards a celestial source, and then by scanning and tracking the source, one can build up radio images – whether of complete galaxies or regions of star formation in the Milky Way. With its ability to observe simultaneously at several wavelengths, the telescope can produce multiple images.
English: Mobile payment terminal, in Fornebu, Norway. Operated by NFC technology. Telenor.
English: matlåda, mikro, mikrovågsugn |
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This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: arranged to collage. The original can be viewed here: Lunch box and microwave oven.jpg: .
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Original upload log
[edit]This image is a derivative work of the following images:
- File:Bluetooth game controller.jpg licensed with Cc-by-sa-2.0
- 2021-10-19T14:52:32Z Ser Amantio di Nicolao 3504x2336 (873132 Bytes) Uploaded a work by SarahCartwright from https://www.flickr.com/photos/80912889@N00/48999604991/ with UploadWizard
- File:The IRAM 30-meter telescope scanning the night sky.jpg licensed with Cc-by-sa-4.0
- 2020-10-12T08:25:55Z Karin at IRAM 5788x3862 (11946119 Bytes) Uploaded own work with UploadWizard
- File:Mobile payment 03.JPG licensed with Cc-by-sa-3.0
- 2012-04-17T21:13:27Z HLundgaard 3872x2592 (4371318 Bytes)
- File:Lunch box and microwave oven.jpg licensed with Cc-by-2.0
- 2020-05-23T15:18:02Z Kyllo 5137x3425 (7882710 Bytes) Uploaded a work by Trausti Evans from https://www.flickr.com/photos/114303073@N05/25117841759/ with UploadWizard
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 15:42, 30 December 2023 | 2,560 × 1,708 (1.06 MB) | MikeRun (talk | contribs) | == {{int:filedesc}} == {{Information |Description={{en|1=This setup consists of a HD-S (high speed green) phosphor screen, and a 90kV, 15 milliamp real X-ray tube with a 1.5 amp 12 volt hot cathode. I took the photo running the tube at 60kV and around 2 milliamps. The exposure took 30 seconds, and the green phosphor shadow was post-processed to turn it into the more recognisable negative cyan X-ray transparency. I use an old 20D camera because X-rays DO in fact damage CCD's as I found an i... |
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