• A packing density or packing fraction of a packing in some space is the fraction of the space filled by the figures making up the packing. In simplest...
    4 KB (555 words) - 18:24, 2 June 2025
  • Thumbnail for Sphere packing
    space filled by the spheres is called the packing density of the arrangement. As the local density of a packing in an infinite space can vary depending...
    28 KB (3,419 words) - 21:01, 19 June 2025
  • Thumbnail for Circle packing
    circle can be enlarged without creating an overlap. The associated packing density, η, of an arrangement is the proportion of the surface covered by the...
    11 KB (1,315 words) - 01:47, 19 April 2025
  • Thumbnail for Close-packing of equal spheres
    the highest average density – that is, the greatest fraction of space occupied by spheres – that can be achieved by a lattice packing is π 3 2 ≈ 0.74048...
    19 KB (2,447 words) - 09:25, 16 June 2025
  • achieve a packing density greater than any smaller number > 1. (Higher density records all have rattles.) Disk covering problem Square packing in a circle...
    7 KB (370 words) - 07:36, 12 November 2024
  • Thumbnail for Packing problems
    find the configuration that packs a single container with the maximal packing density. More commonly, the aim is to pack all the objects into as few containers...
    22 KB (2,676 words) - 07:08, 25 April 2025
  • Thumbnail for Heptagon
    double lattice packing of the Euclidean plane of packing density approximately 0.89269. This has been conjectured to be the lowest density possible for...
    15 KB (1,714 words) - 16:57, 24 June 2025
  • Thumbnail for Rhombic enneacontahedron
    otherwise the optimal packing density of spheres could be surpassed by putting a sphere in each rhombicuboctahedron of the hypothetical packing which surpasses...
    5 KB (478 words) - 16:00, 8 October 2022
  • Thumbnail for Electrochemical aptamer-based biosensors
    monolayer (SAM) enable variations of desired probe packing density. The density of aptamer packing on the electrode surface is an important parameter...
    28 KB (3,457 words) - 22:52, 24 May 2025
  • is only one nontrivial packing density. Walter Stromquist (unpublished) settled this case by showing that the packing density of 132 is 2√3 − 3, approximately...
    31 KB (3,647 words) - 20:59, 17 June 2025
  • higher the packing density, the less empty space there is in the packing and thus the smaller the volume of the hull (in comparison to other packings with the...
    16 KB (2,655 words) - 20:49, 19 June 2025
  • close-packed density for this particular procedure of packing. The random close packing is the highest possible volume fraction out of all possible packing procedures...
    10 KB (1,221 words) - 15:53, 3 May 2025
  • Thumbnail for Sphere packing in a sphere
    three-dimensional equivalent of the circle packing in a circle problem in two dimensions. Best packing of m>1 equal spheres in a sphere setting a new density record...
    3 KB (58 words) - 00:34, 21 June 2024
  • Thumbnail for Tetrahedron packing
    disordered packing at densities exceeding 78%. For a periodic approximant to a quasicrystal with an 82-tetrahedron unit cell, they obtained a packing density as...
    9 KB (1,005 words) - 18:00, 14 August 2024
  • Thumbnail for Reuleaux triangle
    923,} which is the density of one possible double lattice packing for these shapes. The best proven upper bound on the packing density is approximately...
    57 KB (6,500 words) - 06:52, 2 June 2025
  • Density (volumetric mass density or specific mass) is the ratio of a substance's mass to its volume. The symbol most often used for density is ρ (the...
    36 KB (3,299 words) - 12:59, 8 June 2025
  • Packing fraction may refer to: Packing density, the fraction of the space filled by objects comprising the packing Atomic packing factor, the fraction...
    398 bytes (78 words) - 21:09, 12 November 2017
  • Thumbnail for Ulam's packing conjecture
    three-dimensional convex body with lower packing density than the sphere? More unsolved problems in mathematics Ulam's packing conjecture, named for Stanisław...
    4 KB (514 words) - 11:43, 27 January 2025
  • In crystallography, atomic packing factor (APF), packing efficiency, or packing fraction is the fraction of volume in a crystal structure that is occupied...
    8 KB (1,382 words) - 13:20, 7 May 2025
  • Thumbnail for Pentagon
    any edge-to-edge tiling made by regular polygons: The maximum known packing density of a regular pentagon is ( 5 − 5 ) / 3 ≈ 0.921 {\displaystyle (5-{\sqrt...
    24 KB (3,080 words) - 18:36, 24 April 2025
  • Thumbnail for Gaussian network model
    This number is a measure of the local packing density around a given residue. The influence of local packing density can be assessed by series expansion...
    36 KB (4,574 words) - 09:39, 22 February 2024
  • Thumbnail for Nanoparticle deposition
    nanoparticles. The methods differ by their ability to control particle packing density and layer thickness, ability to use different particles and the complexity...
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  • Thumbnail for Scanning laser ophthalmoscopy
    eyes. AOSLO has also revealed significant decreases in foveal cone packing density for myopic eyes in comparison to emmetriopic eyes. This difference...
    15 KB (2,149 words) - 16:23, 5 September 2024
  • called asymptotic density) Dirichlet density Packing density Density (polytope) Density on a manifold Tensor density in differential geometry Dense set...
    4 KB (495 words) - 02:52, 16 October 2023
  • Thumbnail for Barium ferrite
    chemistry. Barium ferrite is a highly magnetic material, has a high packing density,[clarification needed] and is a metal oxide. Studies of this material...
    16 KB (1,579 words) - 21:11, 23 May 2025
  • Kepler conjecture (category Packing problems)
    sphere packing in three-dimensional Euclidean space. It states that no arrangement of equally sized spheres filling space has a greater average density than...
    22 KB (2,721 words) - 15:39, 5 June 2025
  • Thumbnail for Bird intelligence
    head size. Furthermore, bird brains have two-to-four times the neuron packing density of mammal brains, for higher overall efficiency. The visual and auditory...
    55 KB (6,751 words) - 16:16, 29 May 2025
  • Circle packing in a square is a packing problem in recreational mathematics where the aim is to pack n unit circles into the smallest possible square....
    5 KB (271 words) - 11:00, 4 March 2025
  • Thumbnail for Endovascular coiling
    aneurysms by limiting blood circulation to the aneurysm space. Clinically, packing density is recommended to be 20-30% or more of the aneurysm's volume, typically...
    22 KB (2,742 words) - 23:51, 19 June 2025
  • Thumbnail for Sphere packing in a cylinder
    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...
    28 KB (3,286 words) - 05:32, 24 September 2024