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  2. Dome magnifier - Wikipedia

    en.wikipedia.org/wiki/Dome_magnifier

    A dome magnifier is a dome-shaped magnifying device made of glass or acrylic plastic, used to enlarge words on a page or computer screen. They are plano-convex lenses: the flat (planar) surface is placed on the object to be magnified, and the convex (dome) surface provides the enlargement. They usually provide between 1.8× and 6× magnification.

  3. Dioptre - Wikipedia

    en.wikipedia.org/wiki/Dioptre

    The magnifying power V of a simple magnifying glass is related to its optical power φ by V = 0.25 m × φ + 1 {\displaystyle V=0.25\ \mathrm {m} \times \varphi +1} . This is approximately the magnification observed when a person with normal vision holds the magnifying glass close to his or her eye.

  4. Magnifying glass - Wikipedia

    en.wikipedia.org/wiki/Magnifying_glass

    A pen seen through a magnifying glass Jim Hutton as detective Ellery Queen, posing with a magnifying glass. A magnifying glass is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle. Beyond its primary function of magnification, this simple yet ingenious tool serves a ...

  5. The best gifts to buy your grandkids — from babies to big ...

    www.aol.com/lifestyle/the-best-gifts-to-buy-your...

    We've tapped our gifting experts and even asked for wishlists from our own kids to come up with the list below of the best gifts to buy for grandkids at Walmart this year. So, leave the actual ...

  6. Screen magnifier - Wikipedia

    en.wikipedia.org/wiki/Screen_magnifier

    Ranges of 1- to 16-times magnification are common. The greater the magnification the smaller the proportion of the original screen content that can be viewed, so users will tend to use the lowest magnification they can manage. [citation needed] Screen magnifiers commonly provide several other features for people with particular sight difficulties:

  7. Loupe - Wikipedia

    en.wikipedia.org/wiki/Loupe

    A photographic loupe for examining film and prints. A loupe (/ ˈ l uː p / LOOP) is a simple, small magnification device used to see small details more closely. [1] They generally have higher magnification than a magnifying glass, and are designed to be held or worn close to the eye.

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