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  2. Equivalent spherical diameter - Wikipedia

    en.wikipedia.org/wiki/Equivalent_spherical_diameter

    Equivalent spherical diameter. The equivalent spherical diameter of an irregularly shaped object is the diameter of a sphere of equivalent geometric, optical, electrical, aerodynamic or hydrodynamic behavior to that of the particle under investigation. [1][2][3] The particle size of a perfectly smooth, spherical object can be accurately defined ...

  3. Solder paste - Wikipedia

    en.wikipedia.org/wiki/Solder_paste

    Mesh size in lines-per-inch Max. size in μm (no larger than) Max. size in μm (less than 1% larger than) Particle size in μm (80% min. between) Avg. size in μm Min. size in μm (10% max. less than) Henkel Powder Description [5] Type 1 150 150-75 20 Type 2 -200/+325 75 75–45 60 20 Type 3 -325/+500 45 45–25 36 20 AGS Type 4 -400/+635 38 38 ...

  4. Mesh (scale) - Wikipedia

    en.wikipedia.org/wiki/Mesh_(scale)

    e. Mesh is a measurement of particle size often used in determining the particle-size distribution of a granular material. For example, a sample from a truckload of peanuts may be placed atop a mesh with 5 mm openings. When the mesh is shaken, small broken pieces and dust pass through the mesh while whole peanuts are retained on the mesh.

  5. Electrical conductor - Wikipedia

    en.wikipedia.org/wiki/Electrical_conductor

    In physics and electrical engineering, a conductor is an object or type of material that allows the flow of charge (electric current) in one or more directions. Materials made of metal are common electrical conductors. The flow of negatively charged electrons generates electric current, positively charged holes, and positive or negative ions in ...

  6. 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 ...

  7. Particle size - Wikipedia

    en.wikipedia.org/wiki/Particle_size

    t. e. Particle size is a notion introduced for comparing dimensions of solid particles (flecks), liquid particles (droplets), or gaseous particles (bubbles). The notion of particle size applies to particles in colloids, in ecology, in granular material (whether airborne or not), and to particles that form a granular material (see also grain size).

  8. Particle size analysis - Wikipedia

    en.wikipedia.org/wiki/Particle_size_analysis

    Particle size analysis, particle size measurement, or simply particle sizing, is the collective name of the technical procedures, or laboratory techniques which determines the size range, and/or the average, or mean size of the particles in a powder or liquid sample. Particle size analysis is part of particle science, and it is generally ...

  9. Mesh analysis - Wikipedia

    en.wikipedia.org/wiki/Mesh_analysis

    Mesh analysis (or the mesh current method) is a circuit analysis method for planar circuits. Planar circuits are circuits that can be drawn on a plane surface with no wires crossing each other. A more general technique, called loop analysis (with the corresponding network variables called loop currents) can be applied to any circuit, planar or ...

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