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
NJIT receives funding to improve Big Bear Telescope, study solar energy
14 hours ago |
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NJIT researchers are at work on many scientific and technological frontiers. The National Science Foundation has recently provided support that totals nearly $4.3 million for the diverse efforts of the following ...
Using superconducting probes to get a picture of what it's like inside CNTs
20 hours ago |
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(PhysOrg.com) -- "Carbon nanotubes are exciting for fundamental physics, and for potential technological applications," Nadya Mason tells PhysOrg.com. "However, we are generally limited in the way that we can study them. ...
Birds 'See' Earth's Magnetic Field
Nov 16, 2009 |
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When birds migrate over long distances -- sometimes thousands of miles -- they usually end up in exactly the same place year after year. Such accurate feats of navigation, accomplished by millions of birds ...
A bubbling ball of gas (w/ Video)
Space & Earth / Space Exploration
Nov 11, 2009 |
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The Sun is a bubbling mass. Packages of gas rise and sink, lending the sun its grainy surface structure, its granulation. Dark spots appear and disappear, clouds of matter dart up - and behind the whole thing ...
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 ...
