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2. Pole building framing - Wikipedia

   en.wikipedia.org/wiki/Pole_building_framing

   The structural frame of a pole building is made of tree trunks, utility poles, engineered lumber or chemically pressure-treated squared timbers which may be buried in the ground or anchored to a concrete slab. Generally the posts are evenly spaced 8 to 12 feet (2.4 to 3.7 m) apart except to allow for doors.

3. Neodymium magnet - Wikipedia

   en.wikipedia.org/wiki/Neodymium_magnet

   A neodymium magnet (also known as NdFeB, NIB or Neo magnet) is a permanent magnet made from an alloy of neodymium, iron, and boron to form the Nd 2 Fe 14 B tetragonal crystalline structure. [1] They are the most widely used type of rare-earth magnet. [2] Developed independently in 1984 by General Motors and in 1970s by Sumitomo Special Metals ...

4. Horseshoe magnet - Wikipedia

   en.wikipedia.org/wiki/Horseshoe_magnet

   A horseshoe magnet is either a permanent magnet or an electromagnet made in the shape of a horseshoe (in other words, in a U-shape). The permanent kind has become the most widely recognized symbol for magnets. [1] : 2 It is usually depicted as red and marked with 'North' and 'South' poles. [1] : 3 Although rendered obsolete in the 1950s by ...

5. Force between magnets - Wikipedia

   en.wikipedia.org/wiki/Force_between_magnets

   The most elementary force between magnets is the magnetic dipole–dipole interaction. If all magnetic dipoles for each magnet are known then the net force on both magnets can be determined by summing all the interactions between the dipoles of the first magnet and the dipoles of the second magnet.

6. Magnet keeper - Wikipedia

   en.wikipedia.org/wiki/Magnet_keeper

   A "horseshoe magnet" made of Alnico 5, about 1 inch high.The metal bar (bottom) is a keeper. A magnet keeper, also known historically as an armature, is a bar made from magnetically soft iron or steel, which is placed across the poles of a permanent magnet to help preserve the strength of the magnet by completing the magnetic circuit; it is important for magnets that have low magnetic ...

7. Lumber prices are plunging. Blame the record drop in U.S ...

   www.aol.com/finance/lumber-prices-plunging-blame...

   The twin-peaked lumber bubble of 2021 and 2022 that once drove home building costs through the roof and exacerbated inflation is now nothing more than a memory. Spot lumber prices have plummeted ...