Keyword: magnetism

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  • Earth’s magnetic poles won’t flip any time soon

    11/27/2015 7:34:31 PM PST · by BenLurkin · 34 replies ^ | By Maria Jose Inojosa
    Why should be we worried about a polarity flip? The magnetic field protects us from harmful solar radiations and cosmic rays. If these start fading away, it may affect every living creature on Earth. An increase in radiation exposure may not only lead to serious health outcomes, but also some genetic disorders could occur. Some biologists even fear that direct exposure to harmful solar radiations may result in mass extinctions. Not only could some severe health consequence fallow the weakening of magnetic field. In a less concerning outcome, but still very worrisome it could lead to a severe disturbance in...
  • Earth's inner core was formed 1-1.5 billion years ago

    10/11/2015 12:03:37 PM PDT · by JimSEA · 38 replies
    Science Daily ^ | 10/7/2015 | University of Liverpool
    There have been many estimates for when the earth's inner core was formed, but scientists from the University of Liverpool have used new data which indicates that the Earth's inner core was formed 1 -- 1.5 billion years ago as it "froze" from the surrounding molten iron outer core. . . . . In a new study published in Nature, researchers from the University's School of Environmental Sciences analysed magnetic records from ancient igneous rocks and found that there was a sharp increase in the strength of the Earth's magnetic field between 1 and 1.5 billion years ago. This increased...
  • Shedding new light on 175-year-old principle: New class of swelling magnets ... energize the world

    05/20/2015 11:06:44 AM PDT · by Red Badger · 21 replies
    Phys.Org ^ | 05-20-2015 | Provided by Temple University
    A new class of magnets that expand their volume when placed in a magnetic field and generate negligible amounts of wasteful heat during energy harvesting, has been discovered by researchers at Temple University and the University of Maryland. The researchers, Harsh Deep Chopra, professor and chair of mechanical engineering at Temple, and Manfred Wuttig, professor of materials science and engineering at Maryland, published their findings, "Non-Joulian Magnetostriction," in the May 21st issue of the journal, Nature. This transformative breakthrough has the potential to not only displace existing technologies but create altogether new applications due to the unusual combination of magnetic...
  • New, expanding magnet turns around 175-year-old principle of magnetism

    05/28/2015 9:06:45 PM PDT · by 2ndDivisionVet · 9 replies
    The International Business Times UK ^ | May 23, 2015 | Jayalakshmi K
    A new class of magnets discovered that swell in volume and generate little heat when placed in a magnetic field could be used to harvest or convert energy efficiently. Applications range from sensors and actuators for automobiles to biomedical devices, besides defence applications. Discovered by scientists at the University of Maryland (UMD) and Temple University, the new magnets made from abundant metal alloys could replace the expensive, rare-earth magnets which exhibit poor mechanical properties. Maryland professor of materials science and engineering Manfred Wuttig, and Harsh Deep Chopra, professor and chair of mechanical engineering at Temple heated certain iron-based alloys (iron-gallium,...
  • New understanding of electromagnetism could enable 'antennas on a chip'

    04/11/2015 10:29:03 AM PDT · by LibWhacker · 33 replies ^ | 4/8/15
    New understanding of electromagnetism could enable 'antennas on a chip' Apr 08, 2015 Enlarge Anechoic chamber. Credit: University of Cambridge A team of researchers from the University of Cambridge have unravelled one of the mysteries of electromagnetism, which could enable the design of antennas small enough to be integrated into an electronic chip. These ultra-small antennas - the so-called 'last frontier' of semiconductor design - would be a massive leap forward for wireless communications. In new results published in the journal Physical Review Letters, the researchers have proposed that electromagnetic waves are generated not only from the acceleration of electrons,...
  • Ice age polarity reversal was global event:

    04/06/2015 5:26:46 AM PDT · by ckilmer · 67 replies ^ | October 16, 2012 | Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences
    Ice Age Magnetic Reversal Was Global Event And Linked With Super Volcano Eruption And Rapid Climate Variability, Says New Research October 17, 2012 in Geology & Climate During the last ice age, around 41,000 years ago, there was a very rapid and complete reversal of the Earth’s geomagnetic field, according to new research. There was already localized evidence of polarity reversals during this time, but with the new research, the theory that it was a global event is now strongly supported. And very interestingly, it is one that nearly coincided with the very fast, short-term climate variability of the last...
  • Frustrated magnets - Hall Effect clues to their discontent

    04/03/2015 5:40:51 PM PDT · by BenLurkin · 21 replies
    An experiment conducted has revealed an unlikely behavior in a class of materials called frustrated magnets, addressing a long-debated question about the nature of these discontented quantum materials. The researchers tested the frustrated magnets -- so-named because they should be magnetic at low temperatures but aren't -- to see if they exhibit a behavior called the Hall Effect. When a magnetic field is applied to an electric current flowing in a conductor such as a copper ribbon, the current deflects to one side of the ribbon. This deflection, first observed in 1879 by E.H. Hall, is used today in sensors...
  • NASAs Magnetospheric Multiscale (MMS) Spacecraft ... to study Earths Magnetic Reconnection Events

    02/28/2015 9:07:27 PM PST · by BenLurkin · 7 replies ^ | Ken Kremer
    Magnetic reconnection is one of the most important drivers of space weather events, said Jeff Newmark, interim director of the Heliophysics Division at NASA Headquarters in Washington. Eruptive solar flares, coronal mass ejections, and geomagnetic storms all involve the release, through reconnection, of energy stored in magnetic fields. Space weather events can affect modern technological systems such as communications networks, GPS navigation, and electrical power grids. The four MMS have been stacked on top of one another like pancakes, encapsulated in the payload fairing, transported to the launch pad, hoisted and mated to the top of the 195-foot-tall rocket.
  • Northern Lights' Physics Could Aid in Nuclear Fusion

    05/07/2014 3:25:00 PM PDT · by BenLurkin · 24 replies
    Live Science ^ | May 06, 2014 10:25am ET | Katia Moskvitch,
    The aurora is more than just a breathtaking display of light. It may also hold the secret of a magnetic phenomenon related to the nuclear fusion powering the sun. This secret could even help create nuclear fusion in the lab, says a team of researchers. Nuclear fusion is a reaction that combines the nuclei of two atoms into one. The process powers stars, but getting a self-sustained fusion reaction going on Earth is very difficult, and has so far eluded scientists. For example, in February, researchers at the Lawrence Livermore Laboratory in California made headlines when they managed to spur...
  • Canada: Our North loses the Pole ~~ moving toward Siberia

    06/17/2005 11:18:11 AM PDT · by Ernest_at_the_Beach · 41 replies · 1,681+ views
    Edmonton Journal ^ | Friday, June 17, 2005 | Nathan VanderKlippe
    Our North loses the Pole After centuries in Canada, the roaming magnetic North Pole has crossed into international waters, en route to Siberia CanWest News Service Thursday, June 09, 2005 YELLOWKNIFE, N.W.T. - Sometime in the last year, a longtime friend turned its back on Canada and was last spotted heading for Siberia.For centuries, the magnetic North Pole was ours, a constant companion that wandered the rolling tundra and frozen seas of our Arctic.But no more.A Canadian scientist who recently returned from a trip to measure the Pole's current location says it has now left Canadian territory and crossed into...
  • Earth's Inner Fort Knox [Earth's core has 1.6 quadrillion tons of gold]

    12/13/2006 10:58:55 PM PST · by grundle · 56 replies · 1,851+ views
    Discover magazine ^ | September 2006 | Anne Wootton
    Searching for a pot of gold? Try the center of the Earth. More than 99 percent of Earth's gold is missingit all sank to the center of the planet billions of years ago. In fact, says geologist Bernard Wood of Macquarie University in Australia, there's enough gold in Earth's core to coat its surface in 1.5 feet of the stuff. How did it get there? Earth formed from a series of smaller planetesimals that crashed together over the course of 30 million to 40 million years. Wood deduced how much gold ought to be present in Earth's crust by comparing...
  • Magnetic Polar Shifts Causing Massive Global Superstorms

    02/04/2011 8:37:22 PM PST · by abbyg55 · 226 replies · 1+ views ^ | 2-4-11 | Terrence Aym
    NASA has been warning about itscientific papers have been written about itgeologists have seen its traces in rock strata and ice core samples... Now "it" is here: an unstoppable magnetic pole shift that has sped up and is causing life-threatening havoc with the world's weather. Forget about global warmingman-made or naturalwhat drives planetary weather patterns is the climate and what drives the climate is the sun's magnetosphere and its electromagnetic interaction with a planet's own magnetic field. When the field shifts, when it fluctuates, when it goes into flux and begins to become unstable anything can happen. And what normally...
  • The Sun: A Great Ball of Iron?

    07/17/2002 11:33:32 PM PDT · by per loin · 66 replies · 680+ views
    Science Daily
    Source: University Of Missouri-Rolla ( Date: Posted 7/17/2002 The Sun: A Great Ball Of Iron? For years, scientists have assumed that the sun is an enormous mass of hydrogen. But in a paper presented before the American Astronomical Society, Dr. Oliver Manuel, a professor of nuclear chemistry at UMR, says iron, not hydrogen, is the sun's most abundant element. Manuel claims that hydrogen fusion creates some of the sun's heat, as hydrogen -- the lightest of all elements -- moves to the sun's surface. But most of the heat comes from the core of an exploded supernova...
  • Primordial Nukes (Prehistoric Nukes Found)

    03/14/2005 5:37:24 PM PST · by blam · 17 replies · 1,548+ views
    Science News Magazine ^ | 3-14-2005 | Peter Weiss
    Primordial NukesThe 2-billion-year-old tale of Earth's natural nuclear reactors Peter Weiss For more than a decade, Alexander P. Meshik has kept close tabs on a fleck of black rock no larger than an infant's fingernail. It's so unassuming that most people would sweep it into a dustpan without a second thought. Yet to Meshik, a nuclear physicist originally from Russia, this little scrap of mineral is a scientific gem. E. Roell The fleck, with its clues to believe-it-or-not geophysical events, emerged from the bowels of Earth decades ago. It was unearthed in the early 1970s at the Oklo uranium mine...
  • Earth's Core Has Another Layer, Scientists Claim

    12/08/2010 12:01:06 PM PST · by NormsRevenge · 64 replies · 1+ views ^ | 12/8/10 | Charles Q. Choi
    What may be a new outermost layer of the Earth's core has been found, geoscientists have revealed. This discovery could help solve mysteries of the planet's magnetic field, researchers say. The Earth's core is composed mainly of iron, divided into a solid inner center roughly 1,500 miles (2,440 kilometers) wide covered by a liquid outer layer about 1,400 miles (2,250 km) thick. Even though the bulk of the core is iron, researchers also knew it contained a small amount of lighter elements such as oxygen and sulfur. As the inner core crystallized over time, scientists think this process forced out...
  • Tiny 3-D images from Stanford and SLAC shed light on origin of Earth's core

    12/16/2010 12:58:12 PM PST · by decimon · 14 replies · 2+ views
    Stanford University ^ | December 16, 2010 | LOUIS BERGERON
    A new method of capturing detailed, three-dimensional images of minute samples of material under extreme pressures is shedding light on the evolution of the Earth's interior. Early results suggest that the early Earth did not have to be entirely molten to separate into the rocky crust and iron-rich core it has today. Researchers at Stanford University and SLAC National Accelerator Laboratory are leading the group pioneering the technique, which could lead to a wide range of new experiments.To answer the big questions, it often helps to look at the smallest details. That is the approach Stanford mineral physicist Wendy Mao...
  • Will Compasses Point South?

    07/13/2004 7:25:26 AM PDT · by Servant of the 9 · 92 replies · 1,714+ views
    New York Times ^ | July 13, 2004 | WILLIAM J. BROAD
    The collapse of the Earth's magnetic field, which both guards the planet and guides many of its creatures, appears to have started in earnest about 150 years ago. The field's strength has waned 10 to 15 percent, and the deterioration has accelerated of late, increasing debate over whether it portends a reversal of the lines of magnetic force that normally envelop the Earth. During a reversal, the main field weakens, almost vanishes, then reappears with opposite polarity. Afterward, compass needles that normally point north would point south, and during the thousands of years of transition, much in the heavens and...
  • Earthquakes and Tsunamis are triggered by Star-quakes

    03/06/2005 11:09:03 PM PST · by bd476 · 131 replies · 1,924+ views
    India Daily News ^ | March 7, 2005
    Earthquakes and Tsunamis are triggered by Star-quakes the invisible interconnection between different parts of the Universe The position of SGR1806-20 in a radio image of the sky - 50,000 light-years away Staff Reporter Mar. 7, 2005 Computer models are showing an interesting relationship between star-quakes and earthquakes. Supernova, star-quakes and similar burst of energy in the Universe triggers earthquakes and tsunamis. According to researchers, most of the large earthquakes and Tsunamis happened when there was a burst of energy somewhere in the cosmos. According to BBC, Astronomers say they have been stunned by the amount of energy released in...
  • Ships' logs give clues to Earth's magnetic decline

    05/13/2006 9:51:41 AM PDT · by Crazieman · 59 replies · 1,699+ views
    New Scientist ^ | May 11, 2006 | Patrick Berry
    Ships' logs give clues to Earth's magnetic decline 19:00 11 May 2006 news service Patrick Barry The voyages of Captain Cook have just yielded a new discovery: the gradual weakening of Earths magnetic field is a relatively recent phenomenon. The discovery has led experts to question whether the Earth is on track towards a polarity reversal. By sifting through ships logs recorded by Cook and other mariners dating back to 1590, researchers have greatly extended the period over which the behaviour of the magnetic field can be studied. The data show that the current decline in Earth's magnetism was...
  • Reversal of Earth's Magnetic Field-(Hey Algore read this)

    06/03/2006 7:00:13 AM PDT · by ThreePuttinDude · 71 replies · 2,690+ views
    Projects in Scientific Computing ^ | N/A | Gary Glatzmaier, Los Alamos National Laboratory
    Rush made mentioned this week of a core sample that showed evidence of tropical remains from an Arctic sample. Here are the results of a similar study done by a federally funded organization that claims this has been happening for........ever. Simulated three-dimensional structure of Earth's magnetic field, with inward (blue) and outward (yellow) directed field lines. Field lines extend two Earth radii from the core. The location of the core-mantle boundary is evident where the structure becomes complex
  • The earth's magnetic field impacts climate: Danish study

    01/12/2009 6:33:01 PM PST · by NormsRevenge · 70 replies · 3,275+ views
    AFP on Yahoo ^ | 1/12/09 | AFP
    COPENHAGEN (AFP) The earth's climate has been significantly affected by the planet's magnetic field, according to a Danish study published Monday that could challenge the notion that human emissions are responsible for global warming. "Our results show a strong correlation between the strength of the earth's magnetic field and the amount of precipitation in the tropics," one of the two Danish geophysicists behind the study, Mads Faurschou Knudsen of the geology department at Aarhus University in western Denmark, told the Videnskab journal. He and his colleague Peter Riisager, of the Geological Survey of Denmark and Greenland (GEUS), compared a...
  • The earth's magnetic field impacts climate: Danish study

    01/15/2009 9:01:24 AM PST · by TaraP · 7 replies · 351+ views
    Terra Daily. ^ | Jan 12th, 2009
    The earth's climate has been significantly affected by the planet's magnetic field, according to a Danish study published Monday that could challenge the notion that human emissions are responsible for global warming. "Our results show a strong correlation between the strength of the earth's magnetic field and the amount of precipitation in the tropics," one of the two Danish geophysicists behind the study, Mads Faurschou Knudsen of the geology department at Aarhus University in western Denmark, told the Videnskab journal. He and his colleague Peter Riisager, of the Geological Survey of Denmark and Greenland (GEUS), compared a reconstruction of the...
  • Does The Earth Harbors a Huge, Natural Nuclear Reactor at its Core -New Discovery Proves "No"

    03/31/2010 12:51:24 AM PDT · by ErnstStavroBlofeld · 15 replies · 742+ views
    The Daily Galaxy ^ | 3/30/2010 | The Daily Galaxy
    Using a delicate instrument located under a mountain in central Italy, two University of Massachusetts Amherst physicists are measuring some of the faintest and rarest particles ever detected, geo-neutrinos, with the greatest precision yet achieved. The data reveal, for the first time, a well defined signal, above background noise, of the extremely rare geo-neutrino particle from deep within Earth. The small number of anti-neutrinos detected, however, only a couple each month, helps to settle a long-standing question among geophysicists and geologists about whether our planet harbors a huge, natural nuclear reactor at its core. Geo-neutrinos are anti-neutrinos produced in the...
  • Anomalies hint at magnetic pole flip

    04/10/2002 2:33:45 PM PDT · by aculeus · 129 replies · 1,261+ views
    New Scientist ^ | 10 April 02 | Nicola Jones
    The Earth's magnetic poles might be starting to flip say researchers who have seen strange anomalies in our planet's magnetic field. The magnetic field is created by the flow of molten iron inside the Earth's core. These circulation patterns are affected by the planet's rotation, so the field normally aligns with the Earth's axis - forming the north and south poles. But the way minerals are aligned in ancient rock shows that the planet's magnetic dipole occasionally disappears altogether, leaving a much more complicated field with many poles all over the planet. When the dipole comes back into force, the...
  • Ancient Mariners Reveal Tales From The Earth's Core

    05/12/2006 4:59:30 PM PDT · by blam · 23 replies · 874+ views
    Nature ^ | 5-11-2006 | Phillip Ball
    <p>Ship logs and pottery show how the geomagnetic field has changed.</p> <p>Old ship records of magnetic north have helped to unravel a record of our planet's field.</p> <p>While sailors plied the Seven Seas in the seventeenth and eighteenth centuries, little did they know that their ships' logs would one day help scientists to reconstruct the history of the Earth's magnetic field.</p>
  • The sun's magnetic field is about to flip

    12/30/2013 9:48:19 AM PST · by Farnsworth · 44 replies
    Sun Herald ^ | December 30 2013 | NASA
    The sun is flipping its poles! Actually, NASA reports that this phenomenon happens about 11 years, when the sun's vast magnetic field flips. "It looks like we're no more than three to four months away from a complete field reversal," said solar physicist Todd Hoeksema of Stanford University. "This change will have ripple effects throughout the solar system." A video shows how the sun will complete the reversal, which appens at the peak of each solar cycle as the sun's inner magnetic dynamo re-organizes. The current "flip" is the midway point of Solar Cycle 24, NASA said. Hoeksema is the...
  • Will We Soon Find Ourselves Back In The Stone Age? Why Swarm Is Watching Our Magnetic Field

    11/25/2013 10:59:28 AM PST · by BenLurkin · 44 replies ^ | November 25, 2013 | Elizabeth Howell on
    The European Space Agencys Swarm constellation flew into space on Friday (Nov. 22) on a quest to understand more about the Earths magnetic field. Around the same time, ESA put out a few videos explaining why the magnetic field is important. This one explains that the magnetic field has weakened over the past few years, while the north pole has shifted direction. In fact, a whole pole reversal is possible, the narrator says. It happened last 780,000 years ago at the very beginning of human history. But cavemen didnt have mobile phone networks, GPS networks or power supplies. If a...
  • Aint Misbehavin Turbulence, Solar Flares and Magnetism

    05/22/2013 7:11:22 PM PDT · by BenLurkin · 9 replies
    UniverseToday ^ | May 22, 2013 | by Tammy Plotner on
    Whats more fun than something that misbehaves? When it comes to solar dynamics, we know a lot, but there are many things we dont yet understand. For example, when a particle filled solar flare lashes out from the Sun, its magnetic field lines can do some pretty unexpected things like split apart and then rapidly reconnect. According to the flux-freezing theorem, these magnetic lines should simply flow away in lock-step with the particles. They should stay intact, but they dont. Its not just a simple rule they break its a law of physics.
  • Why do magnetic business cards not act like N&S pole magnets ?

    02/11/2013 8:21:41 AM PST · by knarf · 50 replies
    self | February 11, 2013 | knarf
    Playin' around with a couple of 'em and they don't do a "repel" thing
  • MIT boffins demonstrate NEW form of magnetism

    12/21/2012 8:19:08 AM PST · by Ernest_at_the_Beach · 18 replies
    The Register ^ | 21st December 2012 09:47 GMT | Richard Chirgwin
    Free whitepaper Shutterfly and Cleversafe: The Path to a Picture Perfect Data Storage Solution A state of magnetism predicted in 1987 has been observed for the first time at MIT, with researchers saying that it might one day find applications in storage and communications technologies. The one day is still quite some way off, however, with the researchers only at the very beginning of observing the properties of whats called a quantum spin liquid (QSL). The properties of a quantum spin liquid are revealed in the spin properties of atoms in a crystal. Rather than settling into a stable...
  • The Enigma 1,800 Miles Below Us

    05/30/2012 9:29:52 AM PDT · by JerseyanExile · 29 replies
    New York Times ^ | May 28, 2012 | Natalie Angier
    As if the inside story of our planet werent already the ultimate potboiler, a host of new findings has just turned the heat up past Stygian. Geologists have long known that Earths core, some 1,800 miles beneath our feet, is a dense, chemically doped ball of iron roughly the size of Mars and every bit as alien. Its a place where pressures bear down with the weight of 3.5 million atmospheres, like 3.5 million skies falling at once on your head, and where temperatures reach 10,000 degrees Fahrenheit as hot as the surface of the Sun. Its a place...
  • Space Weather: Explosions on Venus

    03/18/2012 7:54:56 AM PDT · by SunkenCiv · 27 replies
    NASA ^ | March 5, 2012 | unattributed javascript fan
    Earth has a magnetic field and Venus does not -- a crucial distinction when assessing the effects of the sun on each planet. As the solar wind rushes outward from the sun at nearly a million miles per hour, it is stopped about 44,000 miles away from Earth when it collides with the giant magnetic envelope that surrounds the planet called the magnetosphere. Most of the solar wind flows around the magnetosphere, but in certain circumstances it can enter the magnetosphere to create a variety of dynamic space weather effects on Earth. Venus has no such protective shield, but it...
  • The Catholic Church built Western civilization {Catholic/Orthodox Caucus}

    12/28/2011 1:06:53 PM PST · by Cronos · 22 replies
    Kansas City ^ | 25 Dec 2011 | Thomas E Wood
    .. it is to the Catholic Church more than to any other institution that we owe so many of the treasures of Western civilization. .., scholars operated for two centuries under an Enlightenment prejudice that assumes all progress to come from religious skeptics, and that whatever the church touches is backward, superstitious, even barbaric.</p><p> Since the mid-20th century, this unscholarly prejudice has thankfully begun to melt away, and professors of a variety of religious backgrounds, or none at all, increasingly acknowledge the church's contributions.</p><p> ... modern historians of science freely acknowledge the church's contributions - both theoretical and material -...
  • Initiative Would Let Illegal Immigrants Work In Calif. Legally

    12/03/2011 9:45:20 PM PST · by Lmo56 · 16 replies
    Arizona Daily Star ^ | 12/3/11 | Arizona Daily Star
    SACRAMENTO, Calif.-Nearly 1 million undocumented immigrants could live and work openly in California with little or no fear of deportation under an initiative unveiled Friday by a state legislator and others. Assemblyman Felipe Fuentes, a Democrat, is helping spearhead the measure, called the California Opportunity and Prosperity Act. The proposal was filed Friday with the state Attorney General's Office, marking a first step toward a drive to collect the 504,760 voter signatures needed to qualify for the ballot. Fuentes called the measure a "moderate, common-sense approach" necessitated by the federal government's inability to pass comprehensive immigration reform. "I hope this...
  • Earth's core rotating faster than rest of the planet but slower than previously believed

    02/21/2011 4:47:12 PM PST · by decimon · 29 replies
    University of Cambridge ^ | February 20, 2011 | Unknown
    New research gives the first accurate estimate of how much faster the Earth's core is rotating compared to the rest of the planet. Previous research had shown that the Earth's core rotates faster than the rest of the planet. However, scientists from the University of Cambridge have discovered that earlier estimates of 1 degree every year were inaccurate and that the core is actually moving much slower than previously believed approximately 1 degree every million years. Their findings are published today, Sunday 20 February, in the journal Nature Geoscience. The inner core grows very slowly over time as material...
  • Magnetism's subatomic roots: Rice study of high-tech materials helps explain everyday phenomenon

    09/04/2010 9:49:37 AM PDT · by SunkenCiv · 33 replies
    Rice University ^ | Friday, September 3, 2010 | Jade Boyd
    The modern world -- with its ubiquitous electronic devices and electrical power -- can trace its lineage directly to the discovery, less than two centuries ago, of the link between electricity and magnetism. But while engineers have harnessed electromagnetic forces on a global scale, physicists still struggle to describe the dance between electrons that creates magnetic fields. Two theoretical physicists from Rice University are reporting initial success in that area in a new paper in the Proceedings of the National Academy of Science. Their new conceptual model, which was created to learn more about the quantum quirks of high-temperature superconductors...
  • The Best Refrigerator Magnet Ever?

    03/20/2010 7:31:27 PM PDT · by neverdem · 23 replies · 1,551+ views
    ScienceNOW ^ | March 19, 2010 | Adrian Cho
    Enlarge Image Limit breaker? The crystal structure of Fe16N2, which one group of researchers says beats the predicted limit for magnetism in a material. Credit: Jian-Ping Wang PORTLAND, OREGON—There are limits to just how magnetic a material can be. Or so researchers thought. A compound of iron and nitrogen is about 18% more magnetic than the most magnetic material currently known, a team of materials scientists claims. If such magnets could be produced commercially, they could, for example, allow electronics manufactures to equip computer hard drives with smaller "write heads" capable of cramming them with more information. Other researchers...
  • Study Peels Back More of the Magnetic Sun

    03/12/2010 11:45:54 PM PST · by neverdem · 12 replies · 730+ views
    ScienceNOW ^ | March 12, 2010 | Phil Berardelli
    Enlarge Image Turmoil. Magnetism produces much of the sun's surface phenomena, such as these sunspots, seen in ultraviolet light. Credit: NASA/TRACE Researchers have discovered that one of the mysterious forces that sweep the sun's surface shows an unexpectedly strong connection with the number of sunspots, magnetic disturbances that can affect Earth's weather and telecommunications. The findings should improve predictions of the sun's dynamics and might even help scientists develop better climate models. Along with heat and light, the sun emits x-rays and magnetically charged particles that can endanger astronauts, fry circuits aboard satellites orbiting Earth, and overload electric power...
  • Magnetized Gas Points to New Physics

    09/29/2009 12:47:47 AM PDT · by neverdem · 18 replies · 990+ views
    ScienceNOW Daily News ^ | 18 September 2009 | Adrian Cho
    Enlarge ImagePeer pressure. Magnetic domains in steel (vertical bans) arise when neighboring electrons point their magnetic poles in the same direction. Credit: Zureks, Chris Vardon/Wikimedia It would be tough to stick it to your refrigerator, but an ultra-cold gas magnetizes itself just as do metals such as iron or nickel, a team of atomic physicists reports. That cool trick shows that the messy physics within solids can be modeled with pristine gases, the researchers say. But others are skeptical that the team has actually seen what they claim. Condensed matter physicists can tell you essentially all there is to...
  • Oceans charge up new theory of magnetism

    06/16/2009 9:29:47 AM PDT · by BGHater · 32 replies · 568+ views
    Times Online ^ | 14 June 2009 | Jonathan Leake
    A radical new idea may revolutionise our understanding of one of the most vital forces on Earth Earth's magnetic field, long thought to be generated by molten metals swirling around its core, may instead be produced by ocean currents, according to controversial new research published this week. It suggests that the movements of such volumes of salt water around the world have been seriously underestimated by scientists as a source of magnetism. If proven, the research would revolutionise geophysics, the study of the Earths physical properties and behaviour, in which the idea that magnetism originates in a molten core is...
  • Europiums superconductivity demonstrated

    05/24/2009 1:18:54 AM PDT · by neverdem · 9 replies · 1,293+ views
    Science News ^ | May 20th, 2009 | Laura Sanders
    The rare earth metal is the 53rd naturally occurring element to possess the property An old element just learned a new trick under pressure. When cooled and squeezed very hard, the soft metallic element europium turns into a superconductor, allowing electrons to flow unfettered by resistance, a study appearing May 13 in Physical Review Letters shows. The results make europium the 53rd of the 92 naturally occurring elements to possess superconductivity, which, if harnessed, could make for more efficient energy transfer. Europium, a rare earth metal with a silver color, is strongly magnetic at everyday temperatures and pressure. Study coauthor...
  • A New Source of Cheap, Fuel-Free, Electric Power Will Help Revive the Economy!

    03/04/2009 3:11:11 PM PST · by 2ndDivisionVet · 13 replies · 752+ views
    Renewable Energy World ^ | March 3, 2009 | Mark Goldes
    For the first time in human history, a worried world watches the economy spiral down all across the planet. Governments, including our own, are providing stimulus packages in a desperate attempt to stop the descent. But, what is missing is real optimism that these efforts will have the desired effect. However, a little known, never before commercialized, source of power - inherently inexpensive, abundant and renewable - may be able to awaken hope in the hearts of men and women everywhere. These terrible troubles are temporary. Healthy alternatives are on the horizon. With modest support, they can be greatly accelerated!...
  • Meet the Intraterrestrials

    06/12/2008 1:00:33 AM PDT · by neverdem · 15 replies · 194+ views
    NY Times ^ | June 10, 2008 | Olivia Judson
    Some weeks ago, I wrote about microbes in the air and their possible role in helping clouds form, in causing rain and in altering the chemistry of the high atmosphere. This week, I want to go in the opposite direction and plunge down into the earth. For many bacteria live deep in the oceans and deep in the earth, far from light, far from what we normally think of as good, comfortable places to live. For example: the bottom of the Mariana Trench. This is a seam on the sea floor in the northwestern Pacific, not far from the island...
  • Inventor Doesn't Dare Say 'Perpetual Motion Machine'

    02/08/2008 7:43:43 AM PST · by Red Badger · 119 replies · 1,082+ views ^ | 02/08/2008 | Staff
    Thane Heins "Perepiteia" generator seems to turn magnetic friction into a magnetic boost, causing the motor to accelerate in a positive feedback loop Thane Heins knows the track record of inventors that claim to make breakthroughs in power generation methods, especially when they claim to defy the second law of thermodynamics. Every so often, a (usually untrained) scientist comes along with a machine that supposedly creates more energy than is put in. Every time, the ideas have been rebuked by real scientists. That's why 46-year-old Heins, a college drop-out from Ottawa who's been working on his project since 1985,...
  • General relativity survives gruelling pulsar test Einstein at least 99.95 percent right

    09/15/2006 5:16:06 AM PDT · by Renfield · 11 replies · 677+ views ^ | 9-14-06 | Particle Physics & Astronomy Research Council
    September 14, 2006 - An international research team led by Prof. Michael Kramer of the University of Manchesters Jodrell Bank Observatory, UK, has used three years of observations of the double pulsar, a unique pair of natural stellar clocks which they discovered in 2003, to prove that Einsteins theory of general relativitythe theory of gravity that displaced Newtonsis correct to within a staggering 0.05%. Their results are published on the14th September in the journal Science and are based on measurements of an effect called the Shapiro Delay. The double pulsar system, PSR J0737-3039A and B, is 2000 light-years away in...
  • IBM Scientists Develop New Way to Explore and Control Atom-Scale Magnetism

    03/31/2006 1:30:58 PM PST · by Ernest_at_the_Beach · 18 replies · 813+ views
    MarketWatch ^ | 2:00 PM ET Mar 30, 2006 | Mike Ross IBM
    SAN JOSE, CA, Mar 30, 2006 (MARKET WIRE via COMTEX) -- IBM scientists have developed a powerful new technique for exploring and controlling magnetism at its fundamental atomic level. The new method promises to be an important tool in the quest not only to understand the operation of future computer circuit and data-storage elements as they shrink toward atomic dimensions, but also to lay the foundation for new materials and computing devices that leverage atom-scale magnetic phenomena. "We have developed a window into the atomic heart of magnetism," said Andreas Heinrich, research staff member at IBM's Almaden Research Center...
  • Ferrofluid Magnetic Sculptures (very interesting photos)

    01/23/2006 8:53:44 AM PST · by uberPatriot · 9 replies · 574+ views
    Ferrofluid is a very interesting material originally developed by NASA it has now found itself been used for a whole range of devices including dampers for controlling and stabilizing large building that move around in the wind. Whats also amazing is that they have such lovely visual qualities when magnetized. The term liquid architecture is used a lot in interactive architecture based on the ideas of how architecture becomes animated by adding the 4th Dimension of Time. Sachiko has taken this idea of liquid architecture more literally with these stunning sculpture made from Ferrofluid which changes its state by the...
  • Nanoscale magnets promise more-shrinkable chips

    01/12/2006 11:32:11 PM PST · by SunkenCiv · 11 replies · 394+ views
    New Scientist ^ | 12 January 2006 | Paul Marks
    Imres team have made a universal logic gate called a majority inverter. From this they can make any other type of logic gate needed for a circuit, including two critical logic gates known as NAND and NOR gates. All possible logic circuits can be made with these. And because the gates are based on magnets they can be switched from one to another easily, allowing processors built from nanomagnets to be reprogrammed to do different jobs while they are in use, says the team. Simulations show processing speeds of at least 100 megahertz should be possible using magnets 110 nanometres...
  • Biggest stars produce strongest magnets

    01/30/2005 1:17:24 PM PST · by Willie Green · 14 replies · 1,000+ views
    For education and discussion only. Not for commercial use. Astronomy is a science of extremes - the biggest, the hottest, and the most massive. Today, astrophysicist Bryan Gaensler (Harvard-Smithsonian Center for Astrophysics) and colleagues announced that they have linked two of astronomy's extremes, showing that some of the biggest stars in the cosmos become the strongest magnets when they die. "The source of these very powerful magnetic objects has been a mystery since the first one was discovered in 1998. Now, we think we have solved that mystery," says Gaensler. The astronomers base their conclusions on data taken with CSIRO's...
  • Magnetic Stars

    10/15/2004 8:29:46 AM PDT · by ckilmer · 8 replies · 525+ views
    eurekalert/Nature/Max-Planck-Gesellschaft ^ | October 14th, 2004 | J. Braithwaite and H.C. Spruit
    Magnetic Stars The puzzle of `magnetic stars' solved by astrophysicists of the Max Planck Society How does one explain the enormous magnetic field strengths of the so-called `magnetic stars'? This question concerning magnetic fields in the cosmos, first posed half a century ago, has now been answered by scientists of the Max Planck Institute for Astrophysics in Garching. With 3-dimensional numerical simulations they have found the magnetic field configurations that underly the strong magnetic fields observed on the surface of the so-called magnetic A-stars and magnetic White Dwarfs, and how these fields can survive for the life time of these...