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  2. Hydrophobic sand - Wikipedia

    en.wikipedia.org/wiki/Hydrophobic_sand

    Kinetic sand in a box as an office toy. Hydrophobic sand (or magic sand) is a toy made from sand coated with a hydrophobic compound. The presence of the hydrophobic compound causes the grains of sand to adhere to one another and form cylinders (to minimize surface area) when exposed to water, and form a pocket of air around the sand. [1]

  3. Kinetic Sand - Wikipedia

    en.wikipedia.org/?title=Kinetic_Sand&redirect=no

    Hydrophobic sand#Brands From a merge : This is a redirect from a page that was merged into another page. This redirect was kept in order to preserve the edit history of this page after its content was merged into the content of the target page.

  4. Sand - Wikipedia

    en.wikipedia.org/wiki/Sand

    Sand is a granular material composed of finely divided mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass. [2]

  5. Theo Jansen - Wikipedia

    en.wikipedia.org/wiki/Theo_Jansen

    This allows the strandbeesten to travel over sand much more efficiently than if it were to travel on wheels. What was at first a rudimentary "breed" has evolved slowly, with the help of evolutionary computation techniques, [ 5 ] into a generation of kinetic sculptures that can react to their environment to some degree.

  6. Deposition (geology) - Wikipedia

    en.wikipedia.org/wiki/Deposition_(geology)

    Wind, ice, water, and gravity transport previously weathered surface material, which, at the loss of enough kinetic energy in the fluid, is deposited, building up layers of sediment. This occurs when the forces responsible for sediment transportation are no longer sufficient to overcome the forces of gravity and friction , creating a resistance ...

  7. Angle of repose - Wikipedia

    en.wikipedia.org/wiki/Angle_of_repose

    Angle of repose of a heap of sand Sandpile from the Matemateca collection. The angle of repose, or critical angle of repose, [1] of a granular material is the steepest angle of descent or dip relative to the horizontal plane on which the material can be piled without slumping.

  8. Talk:Hydrophobic sand - Wikipedia

    en.wikipedia.org/wiki/Talk:Hydrophobic_sand

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  9. Jansen's linkage - Wikipedia

    en.wikipedia.org/wiki/Jansen's_linkage

    Theo Jansen's kinetic sculpture Strandbeest. A wind-driven walking machine. A Strandbeest in action. Jansen's linkage is a planar leg mechanism designed by the kinetic sculptor Theo Jansen to generate a smooth walking motion. [1] Jansen has used his mechanism in a variety of kinetic sculptures which are known as Strandbeesten (Dutch for