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A pen is a handheld device used to apply ink to a surface, usually paper, for writing or drawing. [1] Additional types of specialized pens are used in specific types of applications and environments such as in artwork, electronics, digital scanning and spaceflight, and computing.
The Sondergerät SG 500 Jagdfaust ("hunting fist") or Jägerfaust ("hunter's fist") was an experimental airborne anti-bomber recoilless rifle designed for use in the Me 163 Komet rocket plane [1] by the German Luftwaffe during World War II.
Hooded nib of a Hero pen. By the 1990s, the company's Hero brand fountain pens had earned a reputation in China as the best in the country. [2] Hero pens were also popular internationally during the 1980s and 1990s and remain especially desirable among users of fountain pens in India.
Gel pens. Compared to other inks, gel ink has higher melting point viscosity, which supports a higher proportion of pigments in the medium.The pigments are typically copper phthalocyanine, carbon black and iron oxides, and the gel is made up of water and biopolymers, such as xanthan gum and tragacanth gum, as well as some types of polyacrylate thickeners.
Staedtler technical pens Staedtler technical pen divided in parts in comparison with 1 cent euro coin Macro image of a 0.7 mm Rotring Rapidograph nib showing the flow control wire. A technical pen is a specialized instrument used by an engineer, architect, or drafter to make lines of constant width for architectural, engineering, or technical ...
This list is based on the Forbes Global 2000, which ranks the world's 2,000 largest publicly traded companies.The Forbes list takes into account a multitude of factors, including the revenue, net profit, total assets and market value of each company; each factor is given a weighted rank in terms of importance when considering the overall ranking.
A light pen can work with any CRT-based display, but its ability to be used with LCDs was unclear (though Toshiba and Hitachi displayed a similar idea at the "Display 2006" show in Japan [1]). A light pen detects changes in brightness of nearby screen pixels when scanned by cathode-ray tube electron beam and communicates the timing of this ...
Francisco Quisumbing. Francisco Arguelles Quisumbing is said to be a Filipino botanist claimed to be the inventor of Quink ink [1] [2] used by The Parker Pen Company. He studied in the Philippines and the US, gaining a BSc from the University of the Philippines School of Agriculture, [disputed – discuss] Los Baños in 1918 and an MSc in 1921.