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The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...
International Symbol of Access. The International Symbol of Access (ISA), also known as the International Wheelchair Symbol, denotes areas where access has been improved, mostly for those with disabilities. It consists of a usually blue square overlaid in white (or in contrasting colours) with a stylized image of a person in a wheelchair. [1]
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SMS Helgoland was a dreadnought battleship of the Imperial German Navy. Her design improved from the Nassau class, including an increase in the bore diameter of the main guns. Her keel was laid down at the Howaldtswerke shipyards in Kiel; she was launched on 25 September 1909, and commissioned on 23 August 1911.
Visit Insider's Tech Reference library for more stories. Google Images is a great place to search for pictures and photos by typing in relevant keywords. But you can also search Google using an ...
Includes British Library. Free-Images.com – More than 12 Million Public Domain/CC0 stock images, clip-art, historical photos and more. Excellent Search Results. Commercial use OK. No attribution required. No login required. Good Free Photos – All public domain pictures of mainly landscape but wildlife and plants as well