Magnetic field
hideMagnetic fields surround magnetic materials and electric currents and are detected by the force they exert on other magnetic materials and moving electric charges. The magnetic field, at a given point, is specified by both a direction and a magnitude (or strength); as such it is a vector field.
In special relativity, the electric field and magnetic field are two interrelated aspects of a single object, called the electromagnetic field. A pure electric field in one reference frame is observed as a combination of both an electric field and a magnetic field in a moving reference frame.
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News tagged with magnetic field
New TMS clinic offers noninvasive treatment for major depression
Nov 05, 2009 |
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Rush University Medical Center has opened the Transcranial Magnetic Stimulation (TMS) Clinic to offer patients suffering from major depression a safe, effective, non-drug treatment. TMS therapy is the first FDA-approved, ...
Upping the power triggers an ordered helical plasma
Nov 02, 2009 |
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If you keep twisting a straight elastic string, at some moment it starts kinking in a wild way. Something similar occurs when one increases the electrical current flowing in a magnetized plasma doughnut: it ...
Solar winds triggered by magnetic fields
Nov 02, 2009 |
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(PhysOrg.com) -- Solar wind generated by the sun is probably driven by a process involving powerful magnetic fields, according to a new study led by UCL (University College London) researchers based on the ...
Magnetism Turns Drug Release On and Off
Nanotechnology / Bio & Medicine
Oct 30, 2009 |
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Many medical conditions, such as cancer, diabetes and chronic pain, require medications that cannot be taken orally, but must be dosed intermittently, on an as-needed basis, over a long period of time. A few delivery techniques ...
Scientists explain mystery of observed turbulent density fluctuations in interplanetary space
Oct 28, 2009 |
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(PhysOrg.com) -- Scientists at The University of Alabama in Huntsville have developed a three-dimensional simulation model to understand behavior of interplanetary charged particles in space.
Magnetic mixing creates quite a stir (w/ Video)
Oct 27, 2009 |
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Sandia researchers have developed a process that can mix tiny volumes of liquid, even in complicated spaces.
Students demonstrate flux pinning in low gravity
Oct 27, 2009 |
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(PhysOrg.com) -- A team of Cornell researchers recently tested their work on the mysterious physical phenomenon of flux pinning aboard a near-zero gravity aircraft.
Physicists Turn to Radio Dial for Finer Atomic Matchmaking
Oct 20, 2009 |
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(PhysOrg.com) -- Investigating mysterious data in ultracold gases of rubidium atoms, scientists at the Joint Quantum Institute of the National Institute of Standards and Technology and the University of Maryland ...
X-Ray Jets from Galaxies
Oct 19, 2009 |
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(PhysOrg.com) -- Some dramatic galaxies eject gigantic, collimated jets of ionized gas millions of light-years long, powered by the massive black holes at their centers. The ionized jets are detected at radio ...
Small mechanical forces have big impact on embryonic stem cells
Oct 18, 2009 |
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Applying a small mechanical force to embryonic stem cells could be a new way of coaxing them into a specific direction of differentiation, researchers at the University of Illinois report. Applications for force-directed ...
Galactic magnetic fields may control the boundaries of our solar system
Oct 16, 2009 |
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The first all-sky maps developed by NASA's Interstellar Boundary Explorer (IBEX) spacecraft, the initial mission to examine the global interactions occurring at the edge of the solar system, suggest that the galac ...
On the road to fusion energy, an accelerator to study warm dense matter
Oct 16, 2009 |
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Imagine yourself at the core of Jupiter, a planet 300 times the mass of Earth. At 35,000 degrees Fahrenheit, you and I might think it's hot in here, but to a physicist it's merely warm - warm dense matter, ...
Cassini Data Help Redraw Shape of Solar System (w/ Video)
Space & Earth / Space Exploration
Oct 16, 2009 |
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(PhysOrg.com) -- Images from the Ion and Neutral Camera on NASA's Cassini spacecraft suggest that the heliosphere, the region of the sun's influence, may not have the comet-like shape predicted by existing ...
'Magnetricity' observed and measured for the first time
Oct 15, 2009 |
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(PhysOrg.com) -- A magnetic charge can behave and interact just like an electric charge in some materials, according to new research led by the London Centre for Nanotechnology.
Researchers to model the life cycles of successful virtual teams
Technology / Computer Sciences
Oct 13, 2009 |
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Each year, hundreds of scientists from all over the world come to the Florida State University campus to conduct research at the National High Magnetic Field Laboratory. Starting in January, the researchers themselves will ...
