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  2. Magnifying glass - Wikipedia

    en.wikipedia.org/wiki/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 variety of purposes. It can be employed to focus sunlight, harnessing the Sun's rays to create a concentrated hot ...

  3. Pick glass - Wikipedia

    en.wikipedia.org/wiki/Pick_glass

    Pick glass. Pick glass. A pick glass also known as a piece glass is a magnifying glass helpful in counting thread count. It is used to determine the number of yarns in warp and weft in woven fabrics and courses and wales in knitted fabrics. [1] [2] Compact constructions of fabrics may have a higher thread count. That is also called "cloth count."

  4. List of inventions in the medieval Islamic world - Wikipedia

    en.wikipedia.org/wiki/List_of_inventions_in_the...

    A recipe for "fritware" dating to c. 1300 AD written by Abu’l Qasim reports that the ratio of quartz to "frit-glass" to white clay is 10:1:1. [90] This type of pottery has also been referred to as "stonepaste" and "faience" among other names. [91] A 9th-century corpus of "proto-stonepaste" from Baghdad has "relict glass fragments" in its ...

  5. Task lighting - Wikipedia

    en.wikipedia.org/wiki/Task_lighting

    Illuminating magnifier. Some task lights also come with built in magnifying glasses for detailed tasks. It is hard to overstate the benefits of having focused light alongside magnification for small, precise operations such as model building, sewing, or other high-detail activities.

  6. Magnification - Wikipedia

    en.wikipedia.org/wiki/Magnification

    The postage stamp appears larger with the use of a magnifying glass. Stepwise magnification by 6% per frame into a 39-megapixel image. In the final frame, at about 170x, an image of a bystander is seen reflected in the man's cornea. Magnification is the process of enlarging the apparent size, not physical size, of something.

  7. Loupe - Wikipedia

    en.wikipedia.org/wiki/Loupe

    A loupe ( / ˈluːp / 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. A loupe does not have an attached handle, and its focusing lens (es) are contained in an opaque cylinder or cone.

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