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  2. Cordwood construction - Wikipedia

    en.wikipedia.org/wiki/Cordwood_construction

    Cordwood masonry wall detail. The method is sometimes called stackwall because the effect resembles a stack of cordwood. A section of a cordwood home. Cordwood construction (also called cordwood masonry or cordwood building, alternatively stackwall or stovewood particularly in Canada) is a term used for a natural building method in which short logs are piled crosswise to build a wall, using ...

  3. Woodchips - Wikipedia

    en.wikipedia.org/wiki/Woodchips

    Usage of wood chips for heat is low in Quebec due to low hydroelectricity rates but a small town is using wood chips as an alternative to road salt for icy roads. EMC3 Technologies started producing wood chips coated with magnesium chloride in November 2017 for the town and has claimed it maintains traction in -30 degrees Celsius compared to ...

  4. Block-stacking problem - Wikipedia

    en.wikipedia.org/wiki/Block-stacking_problem

    The block-stacking problem is the following puzzle: Place identical rigid rectangular blocks in a stable stack on a table edge in such a way as to maximize the overhang. Paterson et al. (2007) provide a long list of references on this problem going back to mechanics texts from the middle of the 19th century.

  5. Magnetic levitation - Wikipedia

    en.wikipedia.org/wiki/Magnetic_levitation

    Therefore, ferrofluids, with a max bearing pressure in the order of 2 x 104, have been studied to increase the amount of weight that magnetic force can pull. A study by Hsu [2] demonstrated that a ferrofluid-controlled microrobot was able to carry 130 times the mass of its bare magnet counterpart.

  6. Magnetic gear - Wikipedia

    en.wikipedia.org/wiki/Magnetic_Gear

    A third-order magnetic gear is a rotational device, where a mode-2 device is modified to have external field coil(s). The external coils create a harmonic flux when powered with multiple-phase AC, which behaves like a variable number of stator rods, thus effecting a variable transmission or variable ratio magnetic gear. This type of gear ...

  7. Ramial chipped wood - Wikipedia

    en.wikipedia.org/wiki/Ramial_chipped_wood

    It is processed into small pieces by chipping, and the resulting product has a relatively high ratio of cambium to cellulose compared to other chipped wood products. Thus, it is higher in nutrients and is an effective promoter of the growth of soil fungi and of soil-building in general. The goal is to develop an airy and spongy soil that holds ...

  8. Ferrite (magnet) - Wikipedia

    en.wikipedia.org/wiki/Ferrite_(magnet)

    These so-called ceramic magnets are cheap, and are widely used in household products such as refrigerator magnets. The maximum magnetic field B is about 0.35 tesla and the magnetic field strength H is about 30–160 kiloampere turns per meter (400–2000 oersteds). [33] The density of ferrite magnets is about 5 g/cm 3.

  9. Particle board - Wikipedia

    en.wikipedia.org/wiki/Particle_board

    Particleboard with veneer. Particle board, also known as particleboard or chipboard, is an engineered wood product, belonging to the wood-based panels, manufactured from wood chips and a synthetic, mostly formaldehyde-based resin or other suitable binder, which is pressed under a hot press, batch- or continuous- type, and produced. [1]

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