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Zincography was a planographic printing process that used zinc plates. Alois Senefelder first mentioned zinc's lithographic use as a substitute for Bavarian limestone in his 1801 English patent specifications. [1] In 1834, Federico Lacelli patented a zincographic printing process, producing large maps called géoramas. [2]
The use of photozincography at the Ordnance Survey was a great success, with Sir Henry claiming it saved over £2000 a year, from the invention of photo-zincography; the cost of producing a map of a rural district was reduced from 4 to 1 and maps of towns were reduced from 9 to 1. [8]
The development of Photoengraving, Zincography, and wax engraving in the mid-19th Century significantly changed the production of maps and their labels, enabling the addition of printed type to maps using stamps, but map lettering still required a great deal of skill; this remained the state of the art until the development of Photolithography ...
YouTube Kids has faced criticism from advocacy groups, particularly the Fairplay Organization, for concerns surrounding the app's use of commercial advertising, as well as algorithmic suggestions of videos that may be inappropriate for the app's target audience, as the app has been associated with a controversy surrounding disturbing or violent ...
Maps are useful in presenting key facts within a geographical context and enabling a descriptive overview of a complex concept to be accessed easily and quickly. WikiProject Maps encourages the creation of free maps and their upload on Wikimedia Commons. On the project's pages can be found advice, tools, links to resources, and map conventions.
Marine biologists have captured a rare sight of a giant pod of over 1,500 dolphins leaping and swimming off the California coast.. The “super pod” of Risso’s dolphins was spotted in Carmel ...
NEW YORK (AP) — U.S. stock indexes closed their best week in two months with a flourish on Friday. The S&P 500 climbed 1% to clinch its first winning week in the last three.The Dow Jones ...
The latter include Ingo Günther's Worldprocessor Globes, an illuminated diagram display, the Gapminder Card Game, hands-on science maps for kids, and the award-winning short film Humanexus. Each year, the exhibition's international advisory board hosted a competitive selection process to choose ten new maps focused around a central theme.