Rare Earth (apparel)
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Rare Earth (apparel)
Rare earth may refer to: * Rare-earth elements, a group of elements on the periodic table * Rare-earth mineral, a mineral substantively composed of these elements * Rare-earth magnet, a type of magnet that employs rare earth elements to increase effectiveness * Rare Earth hypothesis, the theory that complex life in the universe is exceptionally rare * as a proper noun: ** '' Rare Earth: Why Complex Life Is Uncommon in the Universe'', a book by Peter Ward and Donald E. Brownlee ** Rare Earth (band), an American musical group ** Rare Earth Records Motown is an American record label owned by the Universal Music Group. Founded by Berry Gordy, Berry Gordy Jr. as Tamla Records on January 12, 1959, it was incorporated as Motown Record Corporation on April 14, 1960. Its name, a portmanteau ...
, a subsidiary of Motown Records which produced rock music {{disambig ...
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Rare-earth Element
The rare-earth elements (REE), also called the rare-earth metals or rare earths, and sometimes the lanthanides or lanthanoids (although scandium and yttrium, which do not belong to this series, are usually included as rare earths), are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals. Compounds containing rare earths have diverse applications in electrical and electronic components, lasers, glass, magnetic materials, and industrial processes. The term "rare-earth" is a misnomer because they are not actually scarce, but historically it took a long time to isolate these elements. They are relatively plentiful in the entire Earth's crust (cerium being the 25th-most-abundant element at 68 parts per million, more abundant than copper), but in practice they are spread thinly as trace impurities, so to obtain rare earths at usable purity requires processing enormous amounts of raw ore at great expense; thus the name "rare" earths. Scandium and yttrium are ...
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Rare-earth Mineral
A rare-earth mineral contains one or more rare-earth elements as major metal constituents. Rare-earth minerals are usually found in association with alkaline to peralkaline igneous magmas in pegmatites or with carbonatite Intrusive rock, intrusives. Perovskite (structure), Perovskite mineral phases are common hosts to rare-earth elements within the alkaline complexes. Minerals are solids composed of various inorganic elements, mixed through processes such as evaporation, pressure or other physical changes. Rare earth minerals are rare because rare earth elements have unique geochemical properties that prevent them from easily forming minerals, and are therefore not normally found in deposits large or concentrated enough for mining. This is the reason they are called "rare" earths. These elements have a wide range of uses from every day items to military technologies. The minerals that do exist are often associated with alkaline magmas or with carbonatite Intrusive rock, intrusive ...
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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 (magnet), ferrite or alnico magnets. The magnetic field typically produced by rare-earth magnets can exceed 1.2 tesla (unit), teslas, whereas ferrite or ceramic magnets typically exhibit fields of 0.5 to 1 tesla. There are two types: neodymium magnets and samarium–cobalt magnets. Rare-earth magnets are extremely brittle and also vulnerable to corrosion, so they are usually Plating, plated or coating, coated to protect them from breaking, chipping, or crumbling into powder. The development of rare-earth magnets began around 1966, when K. J. Strnat and G. Hoffer of the US Air Force Research Laboratory, Air Force Materials Laboratory discovered that an alloy of yttrium and cobalt, YCo5, had by far the largest ...
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Rare Earth Hypothesis
In planetary astronomy and astrobiology, the Rare Earth hypothesis argues that the origin of life and the evolution of biological complexity, such as sexually reproducing, multicellular organisms on Earth, and subsequently human intelligence, required an improbable combination of astrophysical and geological events and circumstances. According to the hypothesis, complex extraterrestrial life is an improbable phenomenon and likely to be rare throughout the universe as a whole. The term "Rare Earth" originates from '' Rare Earth: Why Complex Life Is Uncommon in the Universe'' (2000), a book by Peter Ward, a geologist and paleontologist, and Donald E. Brownlee, an astronomer and astrobiologist, both faculty members at the University of Washington. In the 1970s and 1980s, Carl Sagan and Frank Drake, among others, argued that Earth is a typical rocky planet in a typical planetary system, located in a non-exceptional region of a common barred spiral galaxy. From the principle of m ...
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Why Complex Life Is Uncommon In The Universe
Why may refer to: * Causality, a consequential relationship between two events * Reason (argument), a premise in support of an argument, for what reason or purpose * Grounding (metaphysics), a topic in metaphysics regarding how things exist in virtue of more fundamental things. * Why?, one of the Five Ws used in journalism Music Artists * Why? (American band), a hip hop/indie rock band formed in Oakland, California, in 2004 ** Yoni Wolf, formerly known by the stage name Why? * Why (Canadian band), a rock band formed in Winnipeg, Manitoba, in 1993 * Why?, a 1990s UK folk band, two members of which formed Quench in 2001 Albums * ''Why'' (Baby V.O.X album) or the title song, 2000 * ''Why?'' (Ginger Baker album) or the title song, 2014 * ''Why'' (Prudence Liew album) or the title song, 1987 * ''Why?'' (They Might Be Giants album), 2015 * ''Why?'', by Jacob Whitesides, 2016 * ''Why'', by Moahni Moahna, 1996 * ''Why?'', by the MonaLisa Twins, 2022 EPs * ''Why'' (Discharge EP) ...
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Rare Earth (band)
Rare Earth is an American rock band from Detroit, Michigan. According to '' Louder'', "Rare Earth's music straddles genres and defies categorisation, slipping seamlessly between the two seemingly disparate worlds of classic rock and R&B." The band was signed to Motown's subsidiary label Rare Earth. Although not the first white band signed to Motown, Rare Earth was the first successful act signed by Motown that consisted only of white members. History 1960s The group formed in 1960 as the Sunliners and changed its name to Rare Earth in 1968. The band felt the name "Rare Earth" was more in keeping with the names other bands were adopting, such as Iron Butterfly, more "with it". After recording an unsuccessful debut album, ''Dream/Answers'', on the Verve label in 1968, the group was signed to Motown in 1969. The band was one of the first acts signed to a new Motown imprint that would be dedicated to white rock acts; many of the subsidiary's newly signed acts played blues-orien ...
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