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  2. Souptoys - Wikipedia

    en.wikipedia.org/wiki/Souptoys

    Some objects, such as balls, cannons, gears, titling platforms, and colored wooden blocks, allow for level-building and the construction of Rube Goldberg-like contraptions, which could then be saved as a "playset" file and uploaded to the Souptoys website for others to download. [3] Several pre-made playsets are also included with the base game.

  3. Jacob's ladder (toy) - Wikipedia

    en.wikipedia.org/wiki/Jacob's_ladder_(toy)

    A Jacob's ladder (also magic tablets, Chinese blocks, and klick-klack toy [1]) is a folk toy consisting of blocks of wood held together by strings or ribbons. When the ladder is held at one end, blocks appear to cascade down the strings. This effect is a visual illusion which is the result of one

  4. Mortar and pestle - Wikipedia

    en.wikipedia.org/wiki/Mortar_and_pestle

    A mortar and pestle is a set of two simple tools used to prepare ingredients or substances by crushing and grinding them into a fine paste or powder in the kitchen, laboratory, and pharmacy. The mortar ( / ˈ m ɔːr t ər / ) is characteristically a bowl, typically made of hardwood, metal, ceramic , or hard stone such as granite .

  5. Wedge - Wikipedia

    en.wikipedia.org/wiki/Wedge

    They can also be used to separate objects, such as blocks of cut stone. Splitting mauls and splitting wedges are used to split wood along the grain. A narrow wedge with a relatively long taper, used to finely adjust the distance between objects is called a gib, and is commonly used in machine tool adjustment.

  6. Educational toy - Wikipedia

    en.wikipedia.org/wiki/Educational_toy

    Alphabet blocks. The identification of specific toys as having an explicitly educational purpose dates to the 1700s. [11] In 1693, in Some Thoughts Concerning Education, liberal philosopher John Locke asserted that educational toys could enhance children's enjoyment of learning their letters: "There may be dice and play-things, with the letters on them to teach children the alphabet by playing ...

  7. Bed of nails - Wikipedia

    en.wikipedia.org/wiki/Bed_of_nails

    Cinder blocks are placed on the board and then smashed with a sledgehammer. Despite the seemingly unavoidable force, the volunteer is not harmed: the force from the blow is spread among the thousands of nails, resulting in reduced pressure; [4] the breaking of the blocks also dissipates much of the energy from the hammer. This demonstration of ...

  8. Forest Products Laboratory - Wikipedia

    en.wikipedia.org/wiki/Forest_Products_Laboratory

    The Forest Products Laboratory (FPL) is the national research laboratory of the United States Forest Service, which is part of USDA.Since its opening in 1910, the FPL has provided scientific research on wood, wood products and their commercial uses in partnership with academia, industry, tribal, state, local and other government agencies. [1]

  9. Countertop - Wikipedia

    en.wikipedia.org/wiki/Countertop

    The purpose of the countertop would be different depending on whether it is used in a chemistry lab, physics lab, food science lab, microbiology or a biology lab. Common characteristics of preferred laboratory countertops are ones that are strong, durable, and water-, moisture- or chemical resistant. Depending on the objectives of a lab, they ...