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2. 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). The density of ferrite magnets is about 5 g/cm 3.

3. Superconducting magnet - Wikipedia

   en.wikipedia.org/wiki/Superconducting_magnet

   Schematic of a 20-tesla superconducting magnet with vertical bore. A superconducting magnet is an electromagnet made from coils of superconducting wire. They must be cooled to cryogenic temperatures during operation. In its superconducting state the wire has no electrical resistance and therefore can conduct much larger electric currents than ...

4. Magnetic alloy - Wikipedia

   en.wikipedia.org/wiki/Magnetic_alloy

   A magnetic alloy is a combination of various metals from the periodic table such as ferrite that contains at least one of the three main magnetic elements: iron (Fe), nickel (Ni), or cobalt (Co) etc.. Such an alloy must contain but is not limited to one or more of these metals. Magnetic alloys have become common, especially in the form of steel ...

5. Einstein atomic bomb letter to be auctioned - AOL

   www.aol.com/einstein-atomic-bomb-letter...

   In 2022, Mr Allen's art collection set a new world record for the biggest sale in an auction, raising over $1.5bn (£1.2bn). It included works by Pablo Picasso, Salvador Dali and Vincent Van Gogh.

6. Stapler - Wikipedia

   en.wikipedia.org/wiki/Stapler

   Stapler. Office stapler. A spring-loaded stapler. A stapler is a mechanical device that joins pages of paper or similar material by driving a thin metal staple through the sheets and folding the ends. Staplers are widely used in government, business, offices, work places, homes and schools. [1]

7. Magnet - Wikipedia

   en.wikipedia.org/wiki/Magnet

   A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, cobalt, etc. and attracts or repels other magnets. A permanent magnet is an object made from a material ...