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Ozalid machine in use with the City of Seattle, City Light office, circa 1954. Ozalid is a registered trademark [1] of a type of paper used for "test prints" in the monochrome classic offset process. The word "Ozalid" is an anagram of "diazol", the name of the substance that the company "Ozalid" used in the fabrication of this type of paper.
Touchpaper or touch-paper is a slow-burning paper fuse treated with solution of potassium nitrate (or "saltpetre") used for lighting flammable or explosive devices such as fireworks, it is often blue, and is associated with the phrase "Light the blue touchpaper and retire immediately." Touchpaper may also refer to:
Blue Star Wicca, a sect of traditionalist witches; Blue Star, a nickname for the United States business band frequency of 467.925 MHz; Blue Star (SLV), satellite launcher; Blue star tattoo legend; Blue Star, a type of Multiple working system used on British locomotives; Blue Star Kachina, a legendary spirit; Blue Star, a 2024 Tamil sports film
Livescribe is a paper-based computing platform that consists of a digital pen, digital paper, software applications, and developer tools.. Central to the Livescribe platform is the smartpen, a ballpoint pen with an embedded computer and digital audio recorder.
In addition, a small board with the letters 'LV' (Last Vehicle, painted black on yellow) is often attached to the rear of the vehicle. If a train passes by a station or signal cabin without the appropriate last vehicle indication (or without confirmation of the number of coaches or wagons), it is assumed that the train has separated and ...
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Cyanotype, also referred to as "blueprinting", is the oldest non-silver photographic printing process. [1] It involves exposing materials which have been treated with a solution of potassium ferricyanide and ferric ammonium citrate to a UV light source such as the sun.
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