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  2. File:Convex lens (magnifying glass) and upside-down image.jpg

    en.wikipedia.org/wiki/File:Convex_lens...

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  3. Tumbler (glass) - Wikipedia

    en.wikipedia.org/wiki/Tumbler_(glass)

    Dizzy Cocktail glass, a glass with a wide, shallow bowl, comparable to a normal cocktail glass but without the stem; Collins glass, for a tall mixed drink [2] Highball glass, for mixed drinks [3] Iced tea glass; Juice glass, for fruit juices and vegetable juices. Old fashioned glass, traditionally, for a simple cocktail or liquor "on the rocks ...

  4. File:Convex lens - circle of confusion.svg - Wikipedia

    en.wikipedia.org/wiki/File:Convex_lens_-_circle...

    English: Ray diagram of an imperfect convex lens L, showing the circle of confusion (C). In a perfect lens, light rays entering the lens parallel to the axis pass through a single point, the focal point. However, if the lens has flaws or aberrations, the rays don't pass through a single point.

  5. Klein bottle - Wikipedia

    en.wikipedia.org/wiki/Klein_bottle

    The common physical model of a Klein bottle is a similar construction. The Science Museum in London has a collection of hand-blown glass Klein bottles on display, exhibiting many variations on this topological theme. The bottles date from 1995 and were made for the museum by Alan Bennett. [3] The Klein bottle, proper, does not self-intersect.

  6. File:Convex mirror.svg - Wikipedia

    en.wikipedia.org/wiki/File:Convex_mirror.svg

    white background: 21:38, 25 August 2006: 1,492 × 1,281 (11 KB) Icey (talk | contribs) === Description === A diagram representing a convex mirror, which shows its focus, focal length, center of curvature, and the principal axis. It enables the viewer to visualize how the mirror looks and functions.

  7. File:Convex quadrilateral.svg - Wikipedia

    en.wikipedia.org/wiki/File:Convex_quadrilateral.svg

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  8. List of glassware - Wikipedia

    en.wikipedia.org/wiki/List_of_glassware

    A classic 20-facet Soviet table-glass, produced in the city of Gus-Khrustalny since 1943. Tumblers are flat-bottomed drinking glasses. Collins glass, for a tall mixed drink. [5] Dizzy cocktail glass, a glass with a wide, shallow bowl, comparable to a normal cocktail glass but without the stem; Faceted glass or granyonyi stakan

  9. List of bottle types, brands and companies - Wikipedia

    en.wikipedia.org/wiki/List_of_bottle_types...

    A bottle is a rigid container with a neck that is narrower than the body, and a "mouth". Bottles are often made of glass, clay, plastic, aluminum or other impervious materials, and are typically used to store liquids. The bottle has developed over millennia of use, with some of the earliest examples appearing in China, Phoenicia, Rome and Crete.