Soubor:Dr Julius Neubronner patented a miniature pigeon camera activated by a timing mechanism, 1903.jpg

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Popis
English: 1903, Dr Julius Neubronner patented a miniature pigeon camera activated by a timing mechanism. The invention brought him international notability after he presented it at international expositions in Dresden, Frankfurt and Paris in 1909–1911. Spectators in Dresden could watch the arrival of the camera-equipped carrier pigeons, and the photos were immediately developed and turned into postcards which could be purchased. See photos here: File:Pigeon wingtips.jpg
Photograph of a photo in the National Air & Space Museum Spy Technology Section.
Čeština: 1903, Dr Julius Neubronner patentoval lehkou holubí kameru, která se spouštěla časovým mechanismem.
Photograph of a photo in the National Air & Space Museum Spy Technology Section.
Datum
Zdroj https://www.flickr.com/photos/novus_photo/2284610543/sizes/o/
Autor Dr Julius Neubronner

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Toto dílo je volné také v zemích, jejichž právní řád chrání majetková autorská práva po dobu života autora a 70 let po jeho smrti.


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současná22. 8. 2009, 10:07Náhled verze z 22. 8. 2009, 10:071 532 × 2 045 (1,1 MB)Svajcr{{Information |Description={{en|1=1903, Dr Julius Neubronner patented a miniature pigeon camera activated by a timing mechanism. Photograph of a photo in the National Air & Space Museum Spy Technology Section. }} {{cs|1=1903, Dr Julius Neubronner patento

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