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Inventor Masato Sagawa demonstrating a NdFeB magnet's force with 2 kg bottle. 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.
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. The magnetic field typically produced by rare-earth ...
Area. 30,000 ha (120 sq mi) The Vredefort impact structure is the largest verified impact structure on Earth. [1] The crater, which has since been eroded away, has been estimated at 170–300 kilometres (110–190 mi) across when it was formed. [2][3] The remaining structure, comprising the deformed underlying bedrock, is located in present-day ...
Neodymium is the fourth member of the lanthanide series. In the periodic table, it appears between the lanthanides praseodymium to its left and the radioactive element promethium to its right, and above the actinide uranium. Its 60 electrons are arranged in the configuration [Xe]4f 4 6s 2, of which the six 4f and 6s electrons are valence.
The airport would initially be able to cope with 450 departing and 400 incoming passengers per hour. It is believed that there is a market for passenger service, mainly Pretoria residents that do not wish to commute to OR Tambo International Airport in Johannesburg; an estimated 25%-30% of passengers using O.R. Tambo are Pretoria residents.
06/24. 6,299. 1,920. Asphalt. Air Force Base Waterkloof {AFB Wklf} is an airbase of the South African Air Force. It is situated on the outskirts of Pretoria, and is the SAAF's busiest airbase. The base's name means "water ravine" in Afrikaans and in Dutch. Despite the name, this base is not located in the suburban town of Waterkloof, Pretoria ...
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