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2. Welcome in Fall: Here's How to Hang a Wreath on the ... - AOL

   www.aol.com/lifestyle/welcome-fall-heres-hang...

   You can hang a wreath on a glass door, brick, and more—all without causing damage. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...

3. Alnico - Wikipedia

   en.wikipedia.org/wiki/Alnico

   Alnico's anisotropy is oriented along the desired magnetic axis by applying an external magnetic field to it during the precipitate particle nucleation, which occurs when cooling from 900 °C (1,650 °F) to 800 °C (1,470 °F), near the Curie point. There are local anisotropies of different orientations without an external field due to ...

4. Maxwell coil - Wikipedia

   en.wikipedia.org/wiki/Maxwell_coil

   A Maxwell coil is a device for producing a large volume of almost constant (or constant-gradient) magnetic field. It is named in honour of the Scottish physicist James Clerk Maxwell . A Maxwell coil is an improvement of a Helmholtz coil : in operation it provides an even more uniform magnetic field (than a Helmholtz coil), but at the expense of ...

5. Rare-earth magnet - Wikipedia

   en.wikipedia.org/wiki/Rare-earth_magnet

   Ferrofluid on glass, with a rare-earth magnet underneath. A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements.Developed in the 1970s and 1980s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets.

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. Lodestone - Wikipedia

   en.wikipedia.org/wiki/Lodestone

   The Earth's magnetic field at 0.5 gauss is too weak to magnetize a lodestone by itself. [9] [10] The leading theory is that lodestones are magnetized by the strong magnetic fields surrounding lightning bolts. [9] [10] [11] This is supported by the observation that they are mostly found near the surface of the Earth, rather than buried at great ...