File:AI Mk VIIA radar in Bristol Beaufighter VIF CH16665 cropped.jpg
AI_Mk_VIIA_radar_in_Bristol_Beaufighter_VIF_CH16665_cropped.jpg (531 × 531 pixels, file size: 43 KB, MIME type: image/jpeg)
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Summary
| Artist |
Royal Air Force official photographer |
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| Description |
English: Royal Air Force Radar, 1939-1945. Air Interception radar: AI Mark VIIIA scanner unit mounted on the nose of a Bristol Beaufighter Mark VIF night fighter. The transmitter unit is not shown, but was fitted to the mounting tray underneath the scanner mechanism. Operating at a frequency of 3 GHz (10 centimeters wavelength) powered by the new magnetron tube invented by John Randall and Harry Boot at Birmingham University, UK in 1940, this was the first microwave air intercept radar, used on British warplanes in World War 2 beginning late 1941. The development of microwave radar was a game changer for the Allies during World War 2, credited with significantly shortening the war. |
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| Date | between 1939 and 1945 | |||
| Source/Photographer |
Cropped version of http://media.iwm.org.uk/iwm/mediaLib//53/media-53740/large.jpg
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| Permission (Reusing this file) |
This image was created and released by the Imperial War Museum on the IWM Non Commercial Licence. Photographs taken, or artworks created, by a member of the forces during their active service duties are covered by Crown Copyright provisions. Faithful reproductions may be reused under that licence, which is considered expired 50 years after their creation. | |||
| Part of | Air Ministry Second World War Official Collection | |||
| Subject(s) |
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| Category | photographs | |||
| Image sorted | yes |
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Licensing
This image is in the public domain because it is a mere mechanical scan or photocopy of a public domain original, or – from the available evidence – is so similar to such a scan or photocopy that no copyright protection can be expected to arise. The original itself is in the public domain for the following reason:
This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as when the enhancements are clear but insufficient. For known raw unenhanced scans you can use an appropriate {{PD-old}} tag instead. For usage, see Commons:When to use the PD-scan tag.  |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:37, 21 October 2014 | | 531 × 531 (43 KB) | EEng | {{User:Fæ/IWM |description = {{en|''Royal Air Force Radar, 1939-1945.''<br/> Air Interception radar: AI Mark VIIIA scanner unit mounted on the nose of a Bristol Beaufighter Mark VIF night fighter. The transmitter unit is not shown, but was fitted to... |
File usage
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