News tagged with iron
On early Earth, iron may have performed magnesium's RNA folding job
On the periodic table of the elements, iron and magnesium are far apart. But new evidence suggests that 3 billion years ago, iron did the chemical work now done by magnesium in helping RNA fold and function ...
7 hours ago |
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X-ray 'echoes' map a supermassive black hole's environs
(Phys.org) -- An international team of astronomers using data from the European Space Agency's (ESA) XMM-Newton satellite has identified a long-sought X-ray "echo" that promises a new way to probe supersized ...
9 hours ago |
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Under the influence of magnetic drugs
(Phys.org) -- For more than three decades scientists have been investigating magnetic nanoparticles as a method of drug delivery. Now by combining three metals - iron, gold and platinum - pharmacists at the ...
Nanotechnology / Bio & Medicine
15 hours ago |
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Building a better solar panel -- one molecule at a time
(Phys.org) -- One of the fundamental building blocks in modern chemistry, an organometallic chemical compound called ferrocene, has never been structurally defined - until now.
May 25, 2012 |
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An unlikely route to ferroelectricity
(Phys.org) -- Ferroelectricity, which was first observed in the 1940s, is an interesting phenomenon involving the spontaneous (non-induced) formation of charge polarization (separation of charge) in certain ...
May 18, 2012 |
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In hydrogenation and hydrogenolysis chemical reactions, water adds speed without heat
(Phys.org) -- An international team of researchers has discovered how adding trace amounts of water can tremendously speed up chemical reactions—such as hydrogenation and hydrogenolysis—in which ...
May 17, 2012 |
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Sulphur and iron compounds common in old shipwrecks
Sulphur and iron compounds have now been found in shipwrecks both in the Baltic and off the west coast of Sweden. The group behind the results, presented in the Journal of Archaeological Science, includes scient ...
Other Sciences / Archaeology & Fossils
May 15, 2012 |
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Ubisoft assembling Avengers for game
(AP) -- Now that they've saved the world on film, "The Avengers" are teaming up for a motion-control video game.
May 10, 2012 |
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Solution to ancient rock puzzle posited
A superplume, or massive episode of volcanic eruptions that related to extensive melting of the Earth's mantle, could explain the puzzling reappearance of major iron formations long after the rise in atmospheric ...
Space & Earth / Earth Sciences
Apr 27, 2012 |
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Magnetic nanochain detonates chemo barrage inside tumors
Medicine-toting nanochains slip into tumors and explode a chemotherapy drug into hard-to-reach cores of cancer, engineers and scientists at Case Western Reserve University report.
Nanotechnology / Bio & Medicine
Apr 18, 2012 |
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November launch for new version of 'Halo' videogame
Microsoft on Tuesday announced that a new installment to the hit videogame "Halo" will be released in November, and predicted it would launch the next decade of the hugely popular franchise.
Apr 17, 2012 |
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Hollywood warms to China's new openness
(AP) -- There's a new breach in China's great cultural wall and Hollywood is cautiously moving in.
Apr 16, 2012 |
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Bacteria 'munching' on Titanic: scientists
In less than 30 years, there may be nothing left of the Titanic but a heap of "rusticles," warns researcher Henrietta Mann, who has spent four years researching bacteria gnawing on its sunken hull.
Apr 10, 2012 |
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Scientists use nanotechnology to hunt for hidden pathogens
Researchers at the University of Central Florida have developed a novel technique that may give doctors a faster and more sensitive tool to detect pathogens associated with inflammatory bowel disease, including ...
Nanotechnology / Bio & Medicine
Apr 09, 2012 |
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Researchers use nanoparticles, magnetic current to damage cancerous cells in mice
Using nanoparticles and alternating magnetic fields, University of Georgia scientists have found that head and neck cancerous tumor cells in mice can be killed in half an hour without harming healthy cells.
Nanotechnology / Bio & Medicine
Mar 27, 2012 |
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Iron
Iron (pronounced /ˈаɪ.ərn/) is a chemical element with the symbol Fe (Latin: ferrum) and atomic number 26. Iron is a group 8 and period 4 element. Iron and iron alloys (steels) are by far the most common metals and the most common ferromagnetic materials in everyday use. Fresh iron surfaces are lustrous and silvery-grey in colour, but oxidise in air to form a red or brown coating of ferrous oxide or rust. Pure single crystals of iron are soft (softer than aluminium), and the addition of minute amounts of impurities, such as carbon, significantly strengthens them. Alloying iron with appropriate small amounts (up to a few per cent) of other metals and carbon produces steel, which can be 1,000 times harder than pure iron.
Iron-56 is the heaviest stable isotope produced by the alpha process in stellar nucleosynthesis; heavier elements than iron and nickel require a supernova for their formation. Iron is the most abundant element in the core of red giants, and is the most abundant metal in iron meteorites and in the dense metal cores of planets such as Earth.
For more information about Iron, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
