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  2. Screen protector - Wikipedia

    en.wikipedia.org/wiki/Screen_protector

    Plastic screen protectors cost less than glass and are thinner (around 0.1 mm (0.004 in) thick, compared to 0.3 to 0.5 mm (0.012 to 0.020 in) for glass) [2] and more flexible. At the same price, glass will resist scratches better than plastic, and feel more like the device's screen, though higher priced plastic protectors may be better than the ...

  3. E Ink - Wikipedia

    en.wikipedia.org/wiki/E_Ink

    E Ink Triton 2 is the last generation of E Ink Triton color displays. The e-readers featuring it appeared in 2013. They include Ectaco Jetbook Color 2 and Pocketbook Color Lux. [46] [47] E Ink Carta, announced in January 2013 at International CES, features 768 by 1024 resolution on 6-inch displays, with 212 ppi pixel density. [48]

  4. History of United States postage rates - Wikipedia

    en.wikipedia.org/wiki/History_of_United_States...

    However, this legislation was set to expire in April 2016. As a result, the Post Office retained one cent of the price change as a previously allotted adjustment for inflation, but the price of a first-class stamp became 47 cents: for the first time in 97 years (and for the fourth time in the agency's history) the price of a stamp decreased. [32]

  5. Open-high-low-close chart - Wikipedia

    en.wikipedia.org/wiki/Open-high-low-close_chart

    An open-high-low-close chart (OHLC) is a type of chart typically used in technical analysis to illustrate movements in the price of a financial instrument over time. Each vertical line on the chart shows the price range (the highest and lowest prices) over one unit of time, e.g., one day or one hour.

  6. Electronic paper - Wikipedia

    en.wikipedia.org/wiki/Electronic_paper

    In February 2009, Amazon released the Kindle 2 and in May 2009 the larger Kindle DX was announced. In July 2010 the third-generation Kindle was announced, with notable design changes. [ 47 ] The fourth generation of Kindle, called Touch, was announced in September 2011 that was the Kindle's first departure from keyboards and page turn buttons ...

  7. Candlestick chart - Wikipedia

    en.wikipedia.org/wiki/Candlestick_chart

    A candlestick chart (also called Japanese candlestick chart or K-line) is a style of financial chart used to describe price movements of a security, derivative, or currency. While similar in appearance to a bar chart, each candlestick represents four important pieces of information for that day: open and close in the thick body, and high and ...

  8. History of paper - Wikipedia

    en.wikipedia.org/wiki/History_of_paper

    [2] [3] Nor is true parchment considered paper: [a] used principally for writing, parchment is heavily prepared animal skin that predates paper and possibly papyrus. In the 20th century with the advent of plastic manufacture, some plastic "paper" was introduced, as well as paper-plastic laminates, paper-metal laminates, and papers infused or ...

  9. Paper - Wikipedia

    en.wikipedia.org/wiki/Paper

    Paper is a thin sheet material produced by mechanically or chemically processing cellulose fibres derived from wood, rags, grasses, herbivore dung, or other vegetable sources in water.