News tagged with magnetic field reversal
Tracking a Jurassic reversal of the Earth's magnetic field
Roughly 180 million years ago, during the height of the Jurassic period, the Earth's magnetic field flipped, bringing the magnetic north pole once again into the Northern Hemisphere.
Space & Earth / Earth Sciences
May 17, 2012 |
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Evidence of second fast north-south pole flip found
(PhysOrg.com) -- The Earth's magnetic poles flip around every 200,000 years or so, with north becoming south and vice versa. Normally, the process takes 4-5,000 years and it ought to be impossible for the ...
Space & Earth / Earth Sciences
Sep 06, 2010 |
4.7 / 5 (44) |
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Reversals of Earth's Magnetic Field Explained by Small Core Fluctuations
(PhysOrg.com) -- Based on studies of old volcanic basalt, scientists know that the Earth’s magnetic field reverses at irregular intervals, ranging from tens of thousands to millions of years. Volcanic basalt ...
Apr 23, 2009 |
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Search results for magnetic field reversal
Enceladus plume is a new kind of plasma laboratory
(Phys.org) -- Recent findings from NASA's Cassini mission reveal that Saturn's geyser moon Enceladus provides a special laboratory for watching unusual behavior of plasma, or hot ionized gas. In these recent ...
Space & Earth / Space Exploration
May 31, 2012 |
5 / 5 (9) |
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Physicists store short movies in an atomic vapor
The storage of light-encoded messages on film and compact disks and as holograms is ubiquitous---grocery scanners, Netflix disks, credit-card images are just a few examples. And now light signals can be stored ...
May 29, 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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Hinode and SOHO paint an asymmetrical picture of the Sun
Approximately every 11 years the magnetic field on the sun reverses completely – the north magnetic pole switches to south, and vice versa. It's as if a bar magnet slowly lost its magnetic field and regained ...
Space & Earth / Space Exploration
Apr 20, 2012 |
4.8 / 5 (12) |
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Clean energy could lead to scarce materials
As the world moves toward greater use of low-carbon and zero-carbon energy sources, a possible bottleneck looms, according to a new MIT study: the supply of certain metals needed for key clean-energy technologies.
Apr 09, 2012 |
3.9 / 5 (8) |
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Mysteries of the sun ... explained in video
NASA has just released five new videos called "Mysteries of the Sun". The videos describe the science of the sun and its effects on the solar system and Earth. Scientists study the sun not only to better understand ...
Space & Earth / Space Exploration
Apr 09, 2012 |
5 / 5 (2) |
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Resetting the future of MRAM
In close collaboration with colleagues from Bochum, Germany, and the Netherlands, researchers from the Helmholtz-Zentrum Berlin, Germany, have developed a novel, extremely thin structure made of various magnetic ...
Mar 07, 2012 |
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'Anti-atomic fingerprint': Physicists manipulate anti-hydrogen atoms for the first time (Update)
The ALPHA collaboration at CERN in Geneva has scored another coup on the antimatter front by performing the first-ever spectroscopic measurements of the internal state of the antihydrogen atom. Their results ...
Mar 07, 2012 |
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Space weather: Explosions on Venus
In the grand scheme of the solar system, Venus and Earth are almost the same distance from the sun. Yet the planets differ dramatically: Venus is some 100 times hotter than Earth and its days more than 200 ...
Space & Earth / Space Exploration
Mar 05, 2012 |
4 / 5 (9) |
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An electrical switch for magnetic current
(PhysOrg.com) -- A new mechanism will make it possible to switch data storage in the future. Researchers at the Max Planck Institute of Microstructure Physics in Halle use a short electric pulse to change ...
Mar 01, 2012 |
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List of search results for magnetic field reversal
