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  2. Bulk modulus - Wikipedia

    en.wikipedia.org/wiki/Bulk_modulus

    Strictly speaking, the bulk modulus is a thermodynamic quantity, and in order to specify a bulk modulus it is necessary to specify how the pressure varies during compression: constant- temperature (isothermal ), constant- entropy ( isentropic ), and other variations are possible. Such distinctions are especially relevant for gases .

  3. Quasicrystal - Wikipedia

    en.wikipedia.org/wiki/Quasicrystal

    Nevertheless, there is a common feature observed in most quasicrystal-forming liquid alloys or their undercooled liquids: a local icosahedral order. The icosahedral order is in equilibrium in the liquid state for the stable quasicrystals, whereas the icosahedral order prevails in the undercooled liquid state for the metastable quasicrystals.

  4. Sieve analysis - Wikipedia

    en.wikipedia.org/wiki/Sieve_analysis

    A sieve analysis (or gradation test) is a practice or procedure used in geology, civil engineering, [1] and chemical engineering [2] to assess the particle size distribution (also called gradation) of a granular material by allowing the material to pass through a series of sieves of progressively smaller mesh size and weighing the amount of material that is stopped by each sieve as a fraction ...

  5. Flexible intermediate bulk container - Wikipedia

    en.wikipedia.org/wiki/Flexible_intermediate_bulk...

    A flexible intermediate bulk container ( FIBC ), jumbo, bulk bag, super sack, big bag, or tonne bag is an industrial container made of flexible fabric that is designed for storing and transporting dry, flowable products, such as sand, fertilizer, and granules of plastic. [ 1][ 2][ 3] FIBCs are most often made of thick woven strands of oriented ...

  6. Granular material - Wikipedia

    en.wikipedia.org/wiki/Granular_material

    v. t. e. A granular material is a conglomeration of discrete solid, macroscopic particles characterized by a loss of energy whenever the particles interact (the most common example would be friction when grains collide). [ 1] The constituents that compose granular material are large enough such that they are not subject to thermal motion ...

  7. Bulk density - Wikipedia

    en.wikipedia.org/wiki/Bulk_density

    Bulk density. In materials science, bulk density, also called apparent density, is a material property defined as the mass of the many particles of the material divided by the bulk volume. Bulk volume is defined as the total volume the particles occupy, including particle's own volume, inter-particle void volume, and the particles' internal ...

  8. Blister pack - Wikipedia

    en.wikipedia.org/wiki/Blister_pack

    A blister pack[ 1] is any of several types of pre-formed plastic packaging used for small consumer goods, foods, and for pharmaceuticals. The primary component of a blister pack is a cavity or pocket made from a formable web, usually a thermoformed plastic. This usually has a backing of paperboard or a lidding seal of aluminum foil or plastic.

  9. Brane cosmology - Wikipedia

    en.wikipedia.org/wiki/Brane_cosmology

    Brane and bulk. The central idea is that the visible, three-dimensional universe is restricted to a brane inside a higher-dimensional space, called the "bulk" (also known as "hyperspace"). If the additional dimensions are compact, then the observed universe contains the extra dimension, and then no reference to the bulk is appropriate.