Sphere packing in a cylinder
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Sphere packing in a cylinder is a three-dimensional packing problem with the objective of packing a given number of identical spheres inside a cylinder of specified diameter and length. For cylinders
The berries of the Arum maculatum form a columnar structure (Bushy Park).
Spherical soap bubbles confined in a cylindrical glass tube.
An example uniform structure and its corresponding rolled-out contact network. The identical vicinity of each sphere defines a uniform structure.
An example line-slip structure and its corresponding rolled-out contact network. A line slip is identified by the loss of contacts.
Weaire–Phelan structure
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In geometry, the Weaire–Phelan structure is a three-dimensional structure representing an idealised foam of equal-sized bubbles, with two different shapes. In 1993, Denis Weaire and Robert Phelan foun
Sphere packing in a cylinder
…structures with internal spheres/foam cells. Some dry foam structures with interior cells were found to consist of a chain of pentagonal dodecahedra or Kelvin cells in the centre of the tube. For many more arrangements of this type, it was observed that the outside bubble layer is ordered, with each internal layer…
A close-up of the mold used for the growth of ordered liquid foams.
Beijing National Aquatics Centre