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  1. Metal - Wikipedia › wiki › Metal

    A metal (from Greek μέταλλον métallon, "mine, quarry, metal") is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically malleable (they can be hammered into thin sheets) or ductile (can be drawn into wires).

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  3. Heavy metal music - Wikipedia › wiki › Heavy_metal_music

    Heavy metal (or simply metal) is a genre of rock music that developed in the late 1960s and early 1970s, largely in the United Kingdom and the United States. With roots in blues rock, psychedelic rock, and acid rock, heavy metal bands developed a thick, massive sound, characterized by distortion, extended guitar solos, emphatic beats, and loudness.

  4. Metal (API) - Wikipedia › wiki › Metal_(API)
    • Overview
    • Features
    • History
    • Supported GPUs

    Metal is a low-level, low-overhead hardware-accelerated 3D graphic and compute shader API created by Apple. It debuted in iOS 8. Metal combines functions similar to OpenGL and OpenCL in one API. It is intended to improve performance by offering low-level access to the GPU hardware for apps on iOS, iPadOS, macOS, and tvOS. It can be compared to low-level APIs on other platforms such as Vulkan and DirectX 12. Metal is an object-oriented API that can be invoked using the Swift or Objective-C progra

    Metal aims to provide low-overhead access to the GPU. Commands are encoded beforehand and then submitted to the GPU for asynchronous execution. The application controls when to wait for the execution to complete thus allowing application developers to increase throughput by encoding other commands while commands are executed on the GPU or save power by explicitly waiting for GPU execution to complete. Additionally, command encoding is CPU independent thus applications can encode commands to each

    Metal has been available since June 2, 2014 on iOS devices powered by Apple A7 or later, and since June 8, 2015 on Macs running OS X El Capitan. On June 5, 2017 at WWDC, Apple announced the second version of Metal, to be supported by macOS High Sierra, iOS 11 and tvOS 11. Metal 2 is not a separate API from Metal and is supported by the same hardware. Metal 2 enables more efficient profiling and debugging in Xcode, accelerated machine learning, lower CPU workload, support for virtual reality on m

    On iOS, tvOS, and macOS, Metal supports Apple-designed SoCs from the Apple A7 or newer. On macOS, Metal also supports Intel HD and Iris Graphics from the HD 4000 series or newer, AMD GCN, and AMD RDNA GPUs. NVIDIA GPUs are supported but Metal drivers for newer devices are not available since macOS Mojave.

    • Apple Inc.
    • 3, / June 2019; 2 years ago
    • June 2014; 7 years ago
    • Shading Language: C++14, Runtime/API: Objective-C
  5. Metal - Simple English Wikipedia, the free encyclopedia › wiki › Metal
    • The Ways That Metals Are Alike
    • Use of Metals
    • Alloys of Metals
    • Metals in Chemistry
    • Metals in History
    • Metals in Astronomy
    • Biological Role in Humans
    • Related Pages

    Most metals are hard, shiny, they feel heavy and they melt only when they are heated at very high temperatures . Lumps of metal will make a bell-like sound when they are hit with something heavy (they are sonorous).Heat and electricity can easily pass through a metal (it is conductive). A lump of metal can be beaten into a thin sheet (it is malleable) or can be pulled into thin wires (it is ductile). Metal is hard to pull apart (it has a high tensile strength) or smash (it has a high compressive strength). If you push on a long, thin piece of metal, it will bend, not break (it is elastic). Except for cesium, copper, and gold, metals have a neutral, silvery color. Not all metals have these properties. Mercury, for instance, is liquid at room temperature, Lead, is very soft, and heat and electricity do not pass through iron as well as they do through copper.

    Metals are very useful to people. They are used to make tools because they can be strong and easy to shape. Iron and steel have been used to make bridges, buildings, or ships. Some metals are used to make items like coins because they are hard and will not wear away quickly. For example, copper (which is shiny and red in color), aluminium (which is shiny and white), gold (which is yellow and shiny), and silver and nickel(also white and shiny). Some metals, like steel, can be made sharp and stay sharp, so they can be used to make knives, axes or razors. Rare metals with high value, like gold, silver and platinum are often used to make jewellery. Metals are also used to make fasteners and screws. Pots used for cooking can be made from copper, aluminium, steel or iron. Lead is very heavy and dense and can be used as ballast in boats to stop them from turning over, or to protect people from ionizing radiation.

    Many things that are made of metals may, in fact, be made of mixtures of at least one metal with either other metals, or with non-metals. These mixtures are called alloys. Some common alloys are: 1. Steel (iron and carbon) (Carbon is a non-metal) 2. Brass (copper and zinc) 3. Bronze (copper and tin) 4. Duralumin (aluminium and copper) 5. Gunmetal (copper, tin, and zinc) People first began making things from metal over 9000 years ago, when they discovered how to get copper from its []ore. They then learned how to make a harder alloy, bronze, by adding tin to the copper. About 3000 years ago, they discovered iron. By adding small amounts of carbon to iron, they found that they could make a particularly useful alloy – steel.

    In chemistry, metal is a word for a group of chemical elements that have certain properties. It is easy for the atoms of a metal to lose an electron and become positive ions, or cations. In this way, metals are not like the other two kinds of elements - the nonmetals and the metalloids. Most elements on the periodic tableare metals. On the periodic table, we can draw a zigzag line from the element boron (symbol B) to the element polonium (symbol Po). The elements that this line passes through are the metalloids. The elements that are above and to the right of this line are the nonmetals. The rest of the elements are the metals. Most of the properties of metals are due to the fact that the atoms in the metal do not hold onto their electrons very tightly. Each atom is separated from the others by a thin layer of valence electrons. However, some metals are different. An example is the metal sodium. It is soft, melts at a low temperature, and is so light, it floats on water. People shou...

    The use of metals is said to be one of the things that makes people different from animals. Before they used metals, people made tools from stones, wood, and animal bones. This is now called the Stone Age. No-one knows when the first metal was found and used. It was probably what is called native copper, which is sometimes found in large lumps on the ground. People learned to make this into copper tools and other things, although, for a metal, it is quite soft. They learned smelting to get copper from common ores. When copper was melted over fire, people learned how to make an alloy called bronze, which is much harder and stronger than copper. People made knives and weapons from bronze. This time in human history, after about 3300 BC is often called the Bronze Age, that is, the time of bronze tools and weapons. Around the year 1200 BC some people learned to make iron tools and weapons. These were even harder and stronger than bronze and this was an advantage in war. The time of iron...

    In astronomy, a metal is any element other than hydrogen or helium. This is because these two elements (and sometimes lithium) are the only ones that form outside stars. In the sky, a spectrometer can see the signs of metals and show the astronomer the metals in a star.

    In humans, some metals are essential nutrients like iron, cobalt, and zinc. Some metals can be harmless such as ruthenium, silver, and indium. Some metals can be toxic in large amounts. Other metals such as cadmium, mercury, and lead, are very poisonous. Sources of metal poisoning include mining, tailings, industrial wastes, agricultural runoff, occupational exposure, paints and treated timber.

  6. Wikipedia:WikiProject Metal - Wikipedia › wiki › Wikipedia:METAL

    (Redirected from Wikipedia:METAL) This is a WikiProject, an area for focused collaboration among Wikipedians. New participants are welcome; please feel free to join!

  7. Sound of Metal - Wikipedia › wiki › Sound_of_Metal

    From Wikipedia, the free encyclopedia Sound of Metal is a 2019 American drama film directed and co-written by Darius Marder. It stars Riz Ahmed as a metal drummer who loses his hearing, and also features Olivia Cooke, Paul Raci, Lauren Ridloff, and Mathieu Amalric.

    • Abraham Marder, Nicolas Becker
    • September 6, 2019 (TIFF), November 20, 2020 (United States)
  8. Metal Church - Wikipedia › wiki › Metal_Church
    • Formative Years
    • First Two Records and Commercial Success
    • Further Albums and First Breakup
    • Reunion of Classic Lineup and Masterpeace
    • Munroe-Led Lineup, Wayne's Death, and Second Breakup
    • Second Reformation, Generation Nothing and Rotating Singers
    • Xi and Rotating Drummers
    • Damned If You Do, Next Album and Howe's Death

    Then based in San Francisco, Kurdt Vanderhoof formed the band in 1980 with various musicians. This era included a brief audition period with future Metallica drummer Lars Ulrich. The three-song, instrumental Red Skiesdemo appeared in 1981, featuring Vanderhoof, guitarist Rick Condrin, bassist Steve Hott, and drummer Aaron Zimpel. Vanderhoof returned to his hometown of Aberdeen in 1981 and began the new group Shrapnel with Craig Wells, Duke Erickson, drummer Tom Weber, and vocalist Mike Murphy. Murphy departed before their next demo, which was recorded without vocals, and Weber departed shortly thereafter. The enlistment of Kirk Arrington and David Wayne completed the group's classic lineup. They released the demo Four Hymns and spent following years touring and accruing material, readopting the Metal Church moniker in 1983. The song "Death Wish" is featured on the compilation album Northwest Metalfest.

    In 1984, they released their self-titled debut album, which included three songs from the Four Hymns demo and a cover of Deep Purple's "Highway Star". They sold 70,000 copies of the album independently before signing to Elektra.[citation needed] According to Wayne, Ulrich and Metallica bandmate James Hetfieldurged Elektra to sign the band before another label did. By the time Metal Church released their second studio album, The Dark, in 1986, they were touring with high-profile acts like Metallica. The Dark was a commercial success, helped by the fact that the band's first music video, "Watch the Children Pray", received frequent airplay on MTV. As a result, the album managed to enter the Billboard 200, and saw Metal Church support the album with a world tour from October 1986 to July 1987, playing with bands like King Diamond, Celtic Frost, Testament, Overkill, D.R.I., Trouble and, individually, with each of the "big four" of thrash metal (Metallica, Megadeth, Slayer and Anthrax)....

    With Howe and Marshall, Metal Church released their third studio album, Blessing in Disguise, in 1989. Critics responded favorably, including some assertions that the record was the group's strongest effort. Blessing in Disguise was even more successful than its predecessors, peaking at number 75 on the Billboard 200; this was Metal Church's highest chart position, until it was surpassed 27 years later by XI. The album's success was attributed to the music video for "Badlands" getting airplay on MTV's Headbangers Ball, and its opening track "Fake Healer" receiving some attention from mainstream radio stations, most notably KNAC and Z Rock. Despite touring well behind the album throughout 1989 and 1990 (playing with bands such as Metallica, W.A.S.P., Accept, Annihilator, Saxon, Meliah Rage, Forced Entry and D.B.C.),they were dropped from Elektra. Metal Church released its fourth studio album, The Human Factor, on Epic Records in 1991. Critics applauded the group for transitioning to...

    The members of Metal Church began compiling their first live album in 1998, Live, which featured songs from their first two records performed by their classic lineup. During the production of Live, Wayne, Vanderhoof, Wells, Arrington, and Erickson decided to reform the band and began work on a new studio album. Wells was forced to depart the band due to familial obligations, however, and was replaced by the returning Marshall. The live album Live in Japan (recorded on the band's 1995 Japanese tour) was also released in 1998,only in Japan. The resulting album, Masterpeace, was released in 1999 on Nuclear Blast Records. Critics responded positively, hailing it as a focused product that increased the energy over previous releases, despite it ultimately failing to break new ground.Arrington and Erickson were unable to tour behind the record, so the band enlisted members of Vanderhoof's side projects, bassist Brian Lake and drummer Jeff Wade, for live performances later that year. Wayne...

    Vanderhoof's eponymous band released A Blur in Time in 2002, and he began working on new material for Metal Church's next album thereafter. In 2003, he and Arrington recruited singer Ronny Munroe, ex-Malice guitarist Jay Reynolds, and bassist Steve Unger to form a new lineup of Metal Church. The band's seventh studio album, The Weight of the World, was released in the following year. Critics generally reacted to the record with a lukewarm response, recognizing its accomplishments while noting its lack of consistency and innovation. On May 10, 2005, David Wayne died of complications from injuries sustained in a car accident that occurred months before. He was 47 years old. In 2006, Arrington left the band due to health complications with diabetes. His replacement was Jeff Plate, who previously worked with Savatage, Chris Caffery and the Trans-Siberian Orchestra. Later that year, the band released their eighth studio album, A Light in the Dark, which featured a re-recording of "Watch...

    In October 2012, the band announced resumption of activity around a lineup featuring Vanderhoof, Munroe, Unger, Reynolds (soon replaced by Van Zandt), and Plate. Their first performances came the following January during the 70,000 Tons of Metal event, a heavy metal cruise. During one of these two shows, the band performed their debut album, Metal Church, in its entirety. Shortly thereafter, Vanderhoof told Music Life Radio that Metal Church had been working on a new album. In order to promote their tenth studio album, the band played festivals in the summer of 2013. The album, Generation Nothing, was released in October. Munroe left the band in September 2014 to "pursue other interests". The band announced its plans to continue nonetheless. On April 30, 2015, Metal Church announced on their Facebook page that former singer Mike Howehad rejoined the band, some 20 years after first leaving the band. According to Howe, Metal Church was on the verge of disbanding once more before he ag...

    Metal Church released their eleventh studio album, XI, on March 25, 2016, and it was their first album with Howe on vocals since 1993's Hanging in the Balance. Hailed by some critics as a comeback album, XI received positive reviews from critics, and was Metal Church's first album in 27 years (since Blessing in Disguise) to enter the Billboard 200; the album peaked at number 57, making it the band's highest chart position in their career. On the album's supporting tour, guitarist Rick Van Zandt had to go in for emergency eye surgery to repair a detached retina, and was temporarily replaced by former Firewolfe guitarist Paul Kleff, and Savatage guitarist Chris Caffery. The band co-headlined a West Coast North American tour with Armored Saint in June 2016, and along with Amon Amarth, Suicidal Tendencies and Butcher Babies, they supported Megadeth on the latter's Dystopiatour in September–October 2016. When asked in October 2016 if he intended write another album with Metal Church, How...

    In a May 2017 interview, Vanderhoof stated that Metal Church had begun writing and demoing their twelfth studio album, which would be tentatively due in early 2018. On October 1, 2018, Metal Church teased an audio sample of a song from their twelfth studio album. The album, Damned If You Do, was announced shortly after and it was released on December 7, 2018. In support of Damned If You Do, Metal Church co-headlined a North American tour with Doro in April–May 2019, and performed at Megadeth's first-ever Megacruise that October. In a July 2019 interview with Italy's Metalforce, Howe said that Metal Church would likely begin writing new material in 2020.Vanderhoof stated in an interview with Metal Wani in April 2020 that Metal Church would "probably start writing that later in the summer." He concluded, "We're gonna sit and we're gonna wait till there's a new album, and then we'll go out and do the normal promoting it or backing it up by touring and playing shows. But we're gonna wai...

  9. Metal – Wikipédia, a enciclopédia livre › wiki › Metal
    • Características Gerais
    • Cristalografia
    • Metalografia
    • Tipos de Metais
    • Bibliografia
    • Ligações Externas


    A condutividade térmica κ {\\displaystyle \\kappa } quantifica a habilidade dos materiais de conduzir calor. Materiais com alta condutividade térmica conduzem calor de forma mais rápida que os materiais com baixa condutividade térmica. A condutividade elétrica (σ {\\displaystyle \\sigma } ) é usada para especificar o caráter elétrico de um material. Ela é o recíproco da resistividade. Ela é indicativa da facilidade com a qual um material é capaz de conduzir uma corrente elétrica. Os metais são po...


    A maleabilidade é uma propriedade que junto a ductilidade apresentam os corpos ao serem moldados por deformação. A diferença é que a ductilidade se refere a formação de filamentos e a maleabilidade permite a formação de delgadas lâminas do material sem que este se rompa, tendo em comum que não existe nenhum método para quantificá-los. Em muitos casos, a maleabilidade de uma substância metálica aumenta com a temperatura. Por isso, os metais são trabalhados mais facilmente a quente. Os metais s...


    Elasticidade estuda o comportamento de corpos materiais que se deformam ao serem submetidos a ações externas (forças devidas ao contato com outros corpos, ação gravitacionalagindo sobre sua massa, etc.), retornando à sua forma original quando a ação externa é removida. Até um certo limite ela depende do material e temperatura.A elasticidade linear, entretanto, é uma aproximação; os materiais reais exibem algum grau de comportamento não-linear. Os metais apresentam alta capacidade de voltar ao...

    Os metais apresentam grande diversidade de propriedades físicas e químicas, conforme a pressão, temperatura e outras variáveis, diferentes tipos de mecanismos e estruturas de cristalização, o que também lhe altera as características. Geralmente, os metais apresentam ordenação cristalina simples, com alto nível de aglutinação atômica (o que implica alta densidade) e numerosos elementos de simetria.[3] No que se refere às combinações, apresentam forte tendência a não formar compostos entre si, mas têm afinidade com elementos não metálicos como o oxigênio e o enxofre, com os quais formam, respectivamente, óxidos e sulfetos.

    O tamanho, forma e disposição das partículas metálicas, especificados pela metalografia, são fundamentais para o reconhecimento das propriedades físicas que determinam a plasticidade, resistência à tração, dureza e outras propriedades do material. Esses fatores podem ser alterados por tratamentos térmicos (ciclos de aquecimento resfriamento controlados) ou mecânicos (forjamento, trefilação, laminação, Com exceção do mercúrio, os metais se caracterizam por estarem no estado sólido em CNTP.

    Os metais quando enumerados alcançam um total de cinquenta e sete elementos químicos, havendo grandes diferenças entre eles como mercúrio (que é líquido) e o sódio (que é leve). Os mais conhecidos e utilizados são o ferro, cobre, estanho, chumbo, alumínio, zinco, ouro e a prata estes dois últimos classificados como metais preciosos.[4] É comum separar os metais em dois grandes grupos: os ferrosos (compostos por ferro) e os não-ferrosos (onde o ferro está ausente).[5] Um outro grupo é composto pelos metais pesados que são metais quimicamente altamente reativos e bioacumuláveis. Como exemplos: cobalto, cobre, manganês, molibdênio, vanádio, estrôncio, e zinco.[6] A mistura de metais formam as ligas metálicas.

    Karl Otto Henseling: Bronze, Eisen, Stahl. Die Bedeutung der Metalle in der Geschichte. In: Kulturgeschichte der Naturwissenschaften und der Technik. Rowohlt, Reinbek 1981, ISBN 3-499-17706-4 Prede...
    Wolfgang Glöckner, Walter Jansen, Rudolf G. Weißenhorn: Handbuch der experimentellen Chemie Sekundarbereich II, Bd.5 : Chemie der Gebrauchsmetalle: Bd. 5. Aulis Verlag Deubner, Köln 2003, ISBN 3-76...
  10. Metal Wiki | Fandom › wiki

    The band nearly disbanded in 2002 after negotiating off its label Roadrunner Records, when controversy surrounding Machine Head's fourth album Supercharger (released 3 weeks after September 11, 2001) resulted in their songs and music video for the song "Crashing Around You" (which featured burning buildings) being pulled from all media outlets. The band re-signed with Roadrunner soon after and ...

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