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  2. Invisible ink - Wikipedia

    en.wikipedia.org/wiki/Invisible_ink

    Invisible ink is not effective with glossy or very smooth paper types, since the sizing of these papers prevents ink from being absorbed deep into the paper and it is easily visible, especially if the paper is examined under glancing light. There are, however, commercially available inks for non-porous surfaces that are only visible under ...

  3. InvisiClues - Wikipedia

    en.wikipedia.org/wiki/InvisiClues

    The clues were not written in invisible ink, which made it easy to accidentally get answers to puzzles. Some of the hints were missing; There were many errors, such as misspellings, mis-capitalizations, formatting issues, and punctuation errors. The clues were not included with The Lost Treasures of Infocom II. However, there was a pay-per ...

  4. UV marker - Wikipedia

    en.wikipedia.org/wiki/UV_Marker

    Messages written by a UV marker can be discovered by unintended viewers when there is a change of reflectivity of the paper, or a pen scratches marks on the paper. The smell of the ink also reduces the security of secret messages as the hidden messages can be easily found with the help of trained animals.

  5. Brian McDonald (screenwriter) - Wikipedia

    en.wikipedia.org/wiki/Brian_McDonald_(screenwriter)

    Brian Keith McDonald (born February 18, 1965) [1] is an American screenwriter, director, teacher and author, who lives in the state of Washington.McDonald is best known for the books Invisible Ink, The Golden Theme and Ink Spots, [2] and for the short film White Face.

  6. Ink - Wikipedia

    en.wikipedia.org/wiki/Ink

    When first put to paper, this ink is bluish-black. Over time it fades to a dull brown. Scribes in medieval Europe (about AD 800 to 1500) wrote principally on parchment or vellum. One 12th century ink recipe called for hawthorn branches to be cut in the spring and left to dry. Then the bark was pounded from the branches and soaked in water for ...

  7. Pounce (powder) - Wikipedia

    en.wikipedia.org/wiki/Pounce_(powder)

    Pounce is gently sprinkled all over the writing on the paper. When using a quill or a steel nib, and with inks that are made up to match those typically in use during the 18th and 19th centuries, and provided the pen has been used with the fine strokes typical of handwriting of that period, the handwriting will be sufficiently dry within 10 seconds to allow the paper to be folded without blotting.

  8. Void pantograph - Wikipedia

    en.wikipedia.org/wiki/Void_pantograph

    This makes it possible to see a pattern that had been invisible. [ 1 ] [ 2 ] Numerous variations exist, including printing the marks using a raster of lines in one direction on a background of lines in another direction, [ 3 ] or using fine line patterns that alias into a visible moire pattern when copied.

  9. Talk:Invisible ink - Wikipedia

    en.wikipedia.org/wiki/Talk:Invisible_ink

    Start a discussion about improving the Invisible ink page Talk pages are where people discuss how to make content on Wikipedia the best that it can be. You can use this page to start a discussion with others about how to improve the " Invisible ink " page.